Janet Mertz, University of Wisconsin-Madison By the spring of 1971, Mertz had the DNA pieces she needed. But Berg’s lab still lacked a method for making this trivalent recombinant DNA. Once introduced ...

In 1982 Food and Drug Administration approved Humulin, Eli Lily’s recombinant insulin made from Genentech’s specially modified bacteria. It was the first drug produced through recombinant DNA ...