Passage: He learned about biology early from his father Eugène Nicolle, a doctor at a Rouen hospital. He was educated at the Lycée Pierre Corneille in Rouen. He received his M.D. in 1893 from the Pasteur Institute.  At this point he returned to Rouen, as a member of the Medical Faculty until 1896 and then as Director of the Bacteriological Laboratory.

Question: When was his MD received?
1893