L’immunité dans les maladies infectieuses.

A classic study of the mechanisms concerned in specific antibacterial immunity, and one of Metchnikoff’s best works.  Russian edition: Nevospriimchivost’ k infekcionnim boleznyam. St. Petersburg: K.L. Rikker, 1903. English translation, London, 1905. Digital facsimile of 1901 edition from bnf.gallica at this link.

In 1908 Metchikoff shared the Nobel Prize in Physiology or Medicine with Paul Ehrlich "in recognition of their work on immunity." See also Nos. 2307 and 2538.