Years ago, I read about a “miracle” in Poland in which a consecrated communion wafer was supposedly turned into heart muscle.   At the time what caught my eye was that there were a lot of specific details given of this “miracle”, including extensive quotes from the scientists that studied the material.  This is not typical of miracle claims.

I searched through the internet for more details. I was still wondering what to make of it when my husband, who at the time was working on his Ph.D in experimental oncology, asked what I was up to. I summarized my findings:

“They say it must be human heart tissue because it’s long striated cells with single nuclei in the middle…”

“You mean like a fungus?”

“The expert says ‘the material sent for assessment indicates myocardial tissue, or at least, of all living tissues of the body, it resembles it most.’”

“That statement is absolutely true of fungus”

“And the fibres are interwoven with the cracker”

“OK that’s not even a characteristic of heart tissue, that’s only a characteristic of fungus!”

We both had a good laugh, and I moved on. I assumed that the Church would soon figure out their mistake and quietly move on as well.

Thus, I was quite surprised this week when I read new stories about a communion wafer turned to heart tissue in Poland that had been approved for veneration as a miracle by the Church. I found that concept rather confusing, because consecrated communion wafers are always venerated, because God has turned them into Jesus’s body through a miracle that can’t be seen or sensed in any way. So even if they agreed that science had proved it was just a mouldy cracker, it should still be worthy of veneration, because it would still be Jesus’s mouldy body, right?

Due to the similarities in the story I assumed that this was the same wafer I’d read about years ago. That turned out to be incorrect. There are actually two separate communion wafers, dropped on the floor of two separate Polish churches, set aside in a locked safe to dissolve in water, discovered to be red, pulled out of the water, placed on holy cloths, sent to pathologists for analysis, and determined to be heart tissue. That might seem like an absurd coincidence, but any consecrated wafer falling on the floor in any Catholic Church is set aside to be dissolved in water in a locked safe. The people checking on them believe the wafer is literally a dead body, have heard stories about them miraculously turning into literal body parts, and know that there is a huge financial benefit to a church possessing such a specimen. With that in mind, I’m surprised that analyzing mouldy crackers isn’t an official branch of pathology!

After a bit of reading I concluded that this wasn’t even a new story, nor did it have any particular reason to be in the news, and there is a lot less information publicly available about it. So I moved on. But this morning I saw an article about Carlo Acutis, a teenager who was obsessed with Eucharistic Miracles and set out to catalogue them all in a website before he died of leukemia. His beatification date was set recently. Now, I’m pretty sure this is just a coincidence, or more specifically the Baader-Meinhof phenomenon. But, I know that many religious people would interpret this as a sign from God. And I’m told that if I stop ignoring those my life will be a lot better. And it was a rainy weekend anyway. So I decided to do a bit more research and put together a blog post.

I’m going to be going back and forth between the two events because they are so similar. I will refer to them by the city names. The first incident occurred in 2009 in Sokolka, while the second occurred in 2013 in Legnica.

A Macroscopic Look

First, let’s look at the pictures. The most common pictures are of the samples already removed from the water and the remainder of the wafer.

Sokolka Specimen

Legnica specimen

Those look like blood. They look even more like Serratia marecescens, a type of bacteria that likes to live on damp, starchy foods, and is generally the culprit in these miracles. From the colour to the slimy appearance, it seems like an exact match.

Communion wafer deliberately seeded with Serratia marecescens, from the website Exploring the Invisible

What they definitely do not look like is heart tissue. Heart tissue is muscle – essentially raw meat. It’s dull in colour, and not so slimy.

Dissected human heart, by Kenshinb, Wikimedia Commons. Note that the blood clots look a lot like the specimens above, but the muscle does not.

Could it be heart tissue coated in blood? First of all, the blood would wash off into the water. It would have to be a very stable blood clot to survive submerged for weeks. Secondly, although some reports mention blood on the Legnica specimen, the pathologists on the Sokolka specimen noted that “the mysterious material that appeared on the Host, in its entirety, constitutes myocardial tissue.”

There are also pictures of the Legnica specimen still in the water. The problem is that the various pictures do not appear to be the same specimen.

Legnica specimen from the book He is Alive
Legnica specimen from tfp.org

I guess it’s possible that those are two sides of the same cracker. But I think it’s more likely that one source got their pictures mixed up, particularly because the first image is labelled elsewhere on the internet as a specimen from Utah, which was confirmed to be Serratia.

The second image makes me wonder why anyone thought this was interesting at all. Nothing about that looks like any kind of human tissue to me. It’s more pink than red, and it has white fuzz on the outside. It looks like mould. The priests say they “noticed that over time the stain on the Host changed color from deep red to red brown“, and some other images do look more red, so maybe that’s just an early image. But what does that mean? Did the wafer mould first and then turn into heart tissue? Neither heart tissue nor blood is magenta with white fuzz.

The only reference to the appearance of the Sokolka specimen in water that I could find referred to “the partially dissolved Host with the blood colored substance on its interior”. This is interesting because it might indicate that the red colour was more on the inside than the outside, which is not a characteristic generally associated with Serratia. But it’s hard to tell exactly what they mean with no pictures, and I’m not sure how much weight to give it.

Are there microorganisms other than Serratia that could have that appearance? There are many other microorganisms that can have a blood red colour, but that depends more on their diet than the species. Generally, microorganisms turn red in the presence of a lot of iron. Interestingly, the pictures from Legnica seem to show the specimen in a scratched gold-plated container, which could potentially be a source of iron. However, that’s not really necessary. The CYA medium in the image below, which turned the culture blood red, contains only 3mg/L of iron. That’s easily within the range occurring in drinking water, especially in Poland where most of the raw water comes from ground water.

Aspergillus versicolores – A&B are top & bottom grown on CYA, which contains iron. C&D are on MEA, which does not. Scientific Figure on ResearchGate.

An Interesting Group of Experts

There are several quotes from the experts that studied the samples available on the internet. Unfortunately, most of them have no context. I remember reading an actual writeup regarding the Sokolka specimen when I first came across it, but I can’t find it now. The only paper I can find actually written by the scientists is this one.

It was written by the two pathologists who looked at the Sokolka specimen, as well as a physicist, a priest, and a mechanical engineering professor. That sounds like the setup for a bad joke. The keywords in the English abstract (“Eucharist; special theory of relativity; miracle”) make it sound like it might actually be a good joke. I wanted to read that article so badly that I briefly looked into Polish lessons, but I had to settle for Google Translate. This left many passages difficult to interpret, such as:

“It is difficult to talk about a miracle, for example when examining a sample taken from a bread upright in the market will be seen under a microscope sausage.”

I did manage to figure out what the theory of relativity has to do with some mouldy bread in Poland. The authors seem to be trying to get around an issue about Eucharistic miracles raised by Thomas Aquinas in the 13th century – if the actual tissue from Jesus’s heart is appearing on a cracker in Poland, does that mean that Jesus is sitting up in Heaven with a hole in his heart? Basically, the authors are saying that due to the theory of relativity, an imaginary observer, in a space ship moving at a speed of 10km/s, at a distance of 60 million light years from Earth, would see Jesus’s crucifixion and the priest in modern Poland blessing the cracker as happening at the same time. Thus, the heart tissue can come from Jesus’s dead body, before he was resurrected. I’m not going to bother analyzing this argument because I don’t see the point of it – if it’s a miracle can’t the tissue just time-travel? You’re already invoking magic!

The paper did include some details of their study of the sample, which I will go through in the next section, along with the quotes available from other sources.

Microscopy

Both samples were observed under microscopes. Unfortunately, no microscopy images seem to be available for either specimen. Thus, we have to rely on the writings and quotes from the scientists.

The Legnica sample was analyzed using fluorescence microscopy (dye unspecified). The Sokolka sample was stained with Mayer’s hematoxylin and eosin pink (H&E) and viewed under an optical microscope and a transmission electron microscope.

Both samples were described as looking like fragmented cross-striated muscle. Some typical quotes are below:

  1. “[T]issue fragments containing fragmented parts of cross-striated muscle” (Legnica)
  2. “We have identified myocardial fibres, typical of myocardial tissue with alterations that often appear during the agony.” (Legnica)
  3. “The sample sent for evaluation looks like myocardial tissue. In our opinion, of all the tissues of living organisms this is the one that resembles it the most.” (Sokolka)
  4. “In the histopathological image, the fragments (of the Host) were found containing the fragmented parts of the cross striated muscle. It is most similar to the heart muscle. Tests also determined the tissue to be of human origin, and found that it bore signs of distress.” (Sokolka)
  5. “This sample is cardiac muscle-just before death. It is in agony caused by great stress. This is proved by the presentation of a very strong phenomenon of segmentation or damage to myocardial fibers at the site of the intercalated disks, which does not occur after death. Such changes can be observed only in living tissues. They show evidence of rapid spasms of the heart muscle in the period just before death.” (Sokolka)

Short of outright fraud, this rules out the possibility of bacteria. I don’t think you could find a pathologist deluded enough to sincerely confuse Serratia, or any similar bacteria, with heart tissue, after looking at it under a microscope. Serratia are small and rod-shaped.

Myocardial tissue is striated – it consists of long strands of cells, bundled together. Do any microorganisms consist of long stands of cells? Yes. Fungi, oomycetes and actinobacteria grow in long, filamentous structures called hypha. They would not normally occur in bundles as dense or orderly as muscle tissue, but note how many times the quotes above refer to “fragments”, “segmentation” and “damage”. Do you get the impression the strands might not be as dense or orderly as the researchers would typically expect of heart tissue?

Let’s look at the specific characteristics from the Sokolka relativity paper that led the authors to conclude they were looking at heart tissue:

Damage to myocardial fibers at the site of the intercalated discs constituting morphologically and functionally complex structures, characteristic of heart muscle. The damage was visible as numerous small cracks, as if cut with a knife.

Intercalated disks are disks that divide the cells within a strand of muscle. The Sokolka paper is indicating that these disks are abnormal in the sample cells. They refer to a few studies that indicate that during heart failure the shape of the intercalated disks changes. This one is easiest to access because it’s in English. That paper describes these changes as folds, but the Sokolka paper describes them as “numerous small cracks, as it cut with a knife.”

The equivalent to intercalated disks in a microorganism would be septa, which divide the hyphae into individual cells. Not all filamentous microorganisms have septa, so this eliminates oomycetes and actinobacteria as possibilities, as well as some fungi. Most fungi that do have septa have perforated septa, which allow ribosomes and mitochondria to flow between cells. Perforated… like perhaps they were cut by a knife…

The central arrangement of cell nuclei in the fibers, which is characteristic of heart muscle.

This is undoubtedly the primary reason they came to the conclusion it was heart muscle as opposed to any other striated muscle. Most human muscles have multiple nuclei on the periphery of the cells. However, most fungi have nuclei in the center of the fibers. Bacteria have no nuclei at all, so this further rules them out as a possibility.

Some fibers have also been observed that may correspond to contraction nodes. However, the outlines of the inserts and bunches were visible as delicate myofibrils.

I’m having trouble with the translation in this section, but I think they’re trying to explain finding some really thin delicate stands. Which could be myofibrils, but are also a really common characteristic of fungus.

In natural conditions, a communion wafer put into water will dissolve quickly. In this case it did not.

I don’t think this has anything to do with heart muscle. They are probably attributing it to the miracle. But it also makes sense if there was atypical biota in the water.  

The tissue that appeared on the Host formed an inseparable structure with a delicate seam remaining on the perimeter. The penetration was so intricate that it could not have been done artificially.

Again, this has nothing to do with heart tissue. Intricately penetrating food to form an inseparable structure is what fungus does best.

So basically I cannot find any recorded microscope observations that rule out fungi, and a lot of the observations are actually more consistent with fungi than with heart tissue. In fact, the observations allow me to narrow it down to specifically septate fungi. What does that include? Neurospora crassa, commonly known as red bread mould, is an obvious candidate. Aspergillus versicolor is another.

Living tissue?

Another interesting claim for the Sokolka specimen was that the heart tissue was alive. Specifically, “The heart was alive, just before death. The sample analyzed was not from a dead person. The person was alive.”

I’m not clear exactly what they based that on, but it’s presumably because the cells were alive – mould lives quite well on soggy crackers. Heart cells, on the other hand, do not. I suppose you can assume that they were miraculously kept alive. But for how long? The time between the tissue appearing on the cracker and it being declared still alive by the scientists was almost 3 months. If it was still alive then, is it still alive now? If not, what stopped the miracle? How does this work with the theory of relativity angle? For an observer on the event horizon of a black hole, the moment of Jesus’s death would last forever, therefore, even though Jesus was situated at a particular location in space-time that was definitely not a black hole, and the cracker is in a different location in space-time that is also not a black hole, the heart tissue on the cracker can persist to live on the cracker for months, even though Jesus died in hours? Even if that worked from a scientific standpoint, how would it work theologically? If Jesus’s dying heart still lives on a napkin in Poland, has he not yet died for our sins?

More interestingly, living heart tissue has a very obvious characteristic that distinguishes it from other tissues – it beats. Inherently. Even a single, isolated cell will pulsate.

Single heart cell beating

So will little blobs of cardiomyoctyes grown from stem cells in culture. You can have arrythmias in the heart that make the beating uncoordinated so that the heart as a whole doesn’t beat effectively – that’s what defibrillators fix. But in general, the individual cells are either beating or dead. Theoretically there might be some conditions that could stop a heart cell from beating without immediately killing it (like bathing it in a potassium solution). It wouldn’t survive for long, but no heart cells on a cracker would. But none of those conditions would naturally exist on a cracker in water. So if the cells were alive and not beating, God must have artificially stopped them from beating. Why would God go to the trouble of stopping the heart cells from beating in a miracle that was supposed to be a message to us? Wouldn’t that be deliberately making the message unclear?

Definitely Human?

I have seen several sites claiming that the tissue from both samples is known to be human and from no other organism. I’m not clear how they came to that conclusion. For the Legnica specimen, this statement is given:

“The Wrocław Forensic Medicine Institute immediately excluded the presence of bacteria or fungi as a cause for the Host turning red.” [1](L)

However, there are no details about the process used. There are several references to DNA and genetics, however there are no quotes from geneticists, no description of the tests used, and the meaning of the quotes is mystifying. Typical quotes include:

  1. “A fragment of the DNA sequence was found, but to tell whose DNA it could be, it still needs further research,”
  2. “The genetic researchers indicate the human origin of the tissue.”
  3. We have not tested the blood found on the Host, we only know that human DNA was found.”

The book He is Alive goes further, stating about the Legnica specimen:

“Human blood, type AB, human DNA, but no genetic profile. Human tissue / heart muscle, white blood cells addressing an injury indicating the man was beaten severely, yet for the white blood cells to exist, there must be a living body, a living heart.”

This sentence is not presented as a quote, nor attributed to any source. Therefore, I assume they are the words of the book’s author, John S Carpenter, a psychiatric therapist, who does not even claim to have seen the specimen. What he based these claims on is a mystery. Furthermore, the Legnica section of his book is only a bit over a page long and includes a misattributed image. There are also questionable details given in the Sokolka section, like the study being based on a 1cm2 sized sample, when the entire specimen appears to be smaller than that. Therefore, I am generally dismissing this source as unreliable.

The Sokolka paper on relativity states that “tests also determined the tissue to be of human origin.” With all of the details given for the other tests in this paper, I would expect these tests to be described, but they are not.

Human heart tissue looks like all other mammalian heart tissue. I cannot come up with any way to tell human heart tissue from chimpanzee heart tissue without looking at the DNA. Various sources indicate that they could not get a DNA sequence, yet still imply the DNA showed that the sample was human. The only way I can think of to do that would be to count the chromosomes, which wouldn’t conclusively prove it was human, but it would eliminate most other possibilities. But heart tissue doesn’t divide, and thus the DNA doesn’t condense, so this would not be possible.

If the DNA was sequenced, I don’t know how you could possibly confirm that the DNA was from the sample as opposed to the various sources of contamination. Remember, the wafer fell on the dirty floor of the church, was picked up, placed into the water the priests use to wash their fingers, and multiple people have stood over the sample examining it. If there weren’t at least some human skin cells in the sample it would be a miracle!

Conclusion

Is it realistic to think that all of these experts were fooled by fungus? Well, for one thing, I’m not confident they went to the right experts. Neither sample was submitted to a microbiologist. The experts consulted were pathologists and cardiologists, who work with human tissue. For the Sokolka samples, the narratives seem to imply that these researchers were told it was human before they began their analysis. And for the Legnica specimen, one of the two scientists was blinded to the source of the sample when he did his analysis. Normally blinding would be a good thing, because it wouldn’t push him toward answers compatible with his faith. However, when you hand an expert a sample and ask what it is, he’s naturally going to start with things he sees most often. That means expecting human tissues, not the organisms likely to be found on decaying bread.

Also, note the statements from the University of Bialystok where the Sokolka research was conducted:

“We didn’t do it as a university – said Chyczewski and added that the research was conducted illegally, “quietly”, off the official route.”

“Chyczewski wrote that he did not undermine the diagnosis of his colleagues, although ‘they are characterized by their emotional approach to faith’”

That university and others have offered to conduct detailed tissue research, but the Archbishop has refused.

After a thorough search I can’t find any details about any analysis that would rule out the possibility of fungus in any of those samples. If the experts in fact ruled out this possibility, I would love to learn how they did that. Even if the Church is not allowing future study on the samples because they now believe them to be the body of Jesus (again, weren’t they always?) that doesn’t explain why they aren’t releasing the information they already have. For example, microscopy photos were taken of both samples. I’m rather puzzled why they aren’t available online. If the Church was really confident that this was a miracle you would think they’d want all the public attention they could get. Lacking that information, I’m assuming it’s just mould.