Where: The parish of Saint Mary in Buenos Aires
What happened: While both other miracles are definitely worth finding out about, the most interesting and comprehensive study was done with the 1996 Eucharist. It began bleeding when consecrated and part of it became human tissue. After several intense studies, it was found that the tissue was part of a heart, a muscle of the myocardium, the left ventricle, the muscle that gives life to the whole heart and body.
The tissue revealed further that it belonged to a person who had gone through intense pain, experiencing extended periods of time where he could barely breathe, had immense strain put on the heart (both common feature of crucifixion) and had been stabbed in the left side. What was most insane was that despite the fact this should have killed the person, the tissue showed signs of being ‘alive’.
This was evidenced by intact white blood cells being found in the tissue. This showed the heart sample was pulsating as elsewise the white blood cells would have disintegrated roughly 15 minutes outside of a living body.
Interesting fact: The Archbishop who commissioned the research was none other than the now Pope Francis!