The unique feature of St. Blaise are also the mummified bodies of saints. Behind the great altar lie the preserved bodies of three saints – St. Leona Bemba (+1188), St. Ivan Olinije (+1300) and St. Nicoloso Bursa (+1512). Here are also kept the smaller mummified parts of the saints bodies: the torso of St. Sebastian (+ 282), the foot of Saint Barbara (+288), the tongue of the Holy Mary of Egypt (+522.) And the right forefinger of the Patriarch of Carigrad St. Eutih (+582.).
An undisputed scientific explanation for this preservation has not yet been found. Some general speculations hold that body can be preserved for a long time under certain conditions: in low temperatures, when death is due to arsenic poisoning or if the body was buried in a soil rich with iron and tannins.