Prof. Dr. Petkan Prodanov is a Bulgarian scientist with a significant contribution to the field of immunohistology and immunogenetics. He was the discoverer of two new blood-group types.
Petkan Prodanov (on the right), his brother Hristo and their parents Olga Prodanova and Prodan Petev.
- Year: 1941 - 1942
- Size: 8,2 x 13 cm.
- Ownership: Dr. Yana Stoyanova