Multiple choice

..........................................................discovered that Helicobacter pylori causes peptic ulcers.

  1. Barry Marshall and J. Robin Warren

  2. Francoise Barr--Sinoussi and Luc Montagnier

  3. Peter C. Doherty and Rolf M. Zinkernagel

  4. J. Michael Bishop and Harold E. Varmus

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Marshall and Warren discovered that Helicobacter pylori causes peptic ulcers.