A Russian Zoologist, Ilya Mechnikov Working in the Pasteur Institute

A Russian zoologist, Ilya Mechnikov working in the Pasteur Institute in Paris shared the 1908 Nobel Prize in Physiology or Medicine with German physician and scientist Paul Ehrlich for work __________.

A) demonstrating that beneficial microbes have insulin-like properties
B) demonstrating that beneficial microbes can replace harmful ones to treat intestinal illnesses
C) demonstrating that beneficial microbes modulate probiotic antigens
D) demonstrating that beneficial microbes decrease humoral and cellular immunity