At St. Mary’s Church in Buenos Aires, Argentina, on three occasions in 1992, 1994, and 1996, consecrated hosts exuded a reddish-brown substance that resembled a blood clot. The incident in 1996 was the most studied. After a month of sitting in water, the intact substance was transferred to distilled water and, in 1999, was sent to a pathology lab in New York for analysis without any information on the origin of the sample. Dr. Zugibe concluded that:
“The slide consists of cardiac tissue that displays degenerative changes. When I was told that the heart tissue was kept in tap water for a month and transferred to sterile, distilled water for three years, I indicated that it would be impossible to see white blood cells or macrophages in the sample.”