In the 8th century a monk was celebrating Holy Mass in Lanciano, Italy. He began doubting the real presence of the Flesh and Blood of Our Lord in the Eucharist. After he pronounced the words of Consecration ("This is My Body...This is My Blood"), the Host changed into a living piece of Flesh and the blood (under the form of wine) in the Chalice changed to real blood. The blood coagulated and split into five globules.
Joy filled the monk's soul and he turned to the Mass attendees and exclaimed:
"O fortunate witnesses to whom the Blessed God, to counfound my unbelief, has wished to reveal Himself in this Most Blessed Sacrament and to render Himself visible to our eyes. Come Brethren, and marvel at our God so close to us. Behold the Flesh and the Blood of our Most Beloved Christ."
On December 25, 2013 at St. Jacek parish in Legnica, Poland while distributing Holy Communion, a Sacred Host fell to the floor, and was picked up and placed in a container of water. After some time it begin give a red appearance. The then-bishop of Legnica, Bp. Stefan Cichy, appointed a Commission whose task was to observe the phenomenon.
In February 2014, he removed a fragment of the red matter and deposited it on the corporal. In order to analyze the fragment, the Commission ordered the taking of samples and conducted appropriate tests by different competent authorities.
The final judgment of the Department of Forensic Medicine states:
"The histopathological tissue fragments were found containing a fragmented part of the skeletal muscle. ... The whole image ... is most similar to the heart muscle ... as it appears under the strains of agony. Genetic studies indicate the origin as human tissue."
Sunday, October 12, 2008, just two weeks after the beatification of Svt of God Fr. Michael Sopocko (confessor and spiritual director of Saint Faustina), the priests were distributing Communion during Mass when a consecrated Host fell from the hands of one of the priests.
The priest picked up the host and placed it in the small container of water that normally sits next to the tabernacle for the priest to clean his hands after Communion. The host was expected to dissolve in the water, which would later be disposed of properly.
At the end of Mass, at the request of the pastor, Sr. Julia Dubowska (parish sacristan) poured the water and Host into another container and placed it in the safe in the sacristy, knowing that the consecrated host would take some time to dissolve. Only she and the pastor had the keys to the safe.
A week later, on October 19, when the pastor asked her about the condition of the host, Sr. Julia went to the safe, opened the door and noticed a delicate aroma of bread. When she opened the container, she saw, in the middle of the host (which was still largely intact) a curved, bright red stain, like a blood stain. The water was untainted by the color. The sister immediately informed the priest, who brought in the other priests at the parish and the visiting missionary, Fr. Ryszard Gorowski. They were all amazed and left speechless by what they saw. They immediately notified the Archbishop.
On October 29, the container with the host was transferred to the tabernacle in the rectory's Divine Mercy Chapel. The next day, by decision of the archbishop, the stained host was taken out of the water and placed on a small corporal, which was then put back in the tabernacle.
By mid-January of 2009, the altered fragment of the host had dried out naturally, and remained like a blood stain or clot; since then, its appearance has not changed.
In January 2009, the archbishop requested histopathological studies be done on the host. On March 30, 2009 he created an ecclesial commission to study the phenomenon. A piece of the altered host was taken and analyzed independently by two experts, Prof. Maria Sobaniec-Lotowska, MD, and Prof. Stanislaw Sulkowski, MD. Both are histopathologists at the Medical University of Bialystok. The studies were carried out at the university’s Department of Pathomorphology. The sample that was taken was large enough to carry out all the necessary studies. The studies were exhaustively described and photographed. The complete documentation was given to the Metropolitan Curia of Bialystok. When the samples were taken for analysis, the undissolved part of the consecrated host had become embedded in the cloth. However, the red blood clot was as clear as ever. This transformed part of the host was dry and fragile, inextricably interwoven with the rest of the fragment, which had kept the form of bread.
The results of both independent studies were in perfect agreement. Laboratory analyses confirm that the structure of the cardiac muscle fibers and the structure of the bread are intertwined in a way impossible to reproduce by human means. They concluded that the structure of the transformed fragment of the host is identical to the myocardial (heart) tissue of a living person who is nearing death. The structure of the heart muscle fibers is deeply intertwined with that of the bread, in a way impossible to achieve with human means, according to the declaration of Prof. Maria Sobaniec-Lotowska. The studies proved that no foreign substance was added to the consecrated host; rather, part of the host took the form of heart muscle of a person near death. This kind of phenomenon is inexplicable by the natural sciences. At the same time, the Church teaches us that the consecrated host becomes the Body of Christ, by the power of His own words at the Last Supper, repeated by priests during the consecration of the Mass.
The results of the histopathological studies, dated January 21, 2009, were included in the dossier given to the Metropolitan Curia of Bialystok. In its official communiqué, the Metropolitan Curia of Bialystok stated:
“The Sokolka event is not opposed to the faith of the Church; rather, it confirms it. The Church professes that, after the words of consecration, by the power of the Holy Spirit, the bread is transformed into the Body of Christ, and the wine into His Blood. Additionally, this is an invitation for all ministers of the Eucharist to distribute the Body of the Lord with faith and care, and for the faithful to receive Him with adoration.”Article taken from Aleteia.org