Lewis I Held JrDr Lewis I. Held earned his BS in Life Sciences from the Massachusetts Institute of Technology in 1973. On completion of his PhD in molecular biology from the University of California, Berkeley in 1977, he became a Postdoctoral Fellow at the Universiy of California, Irvine's Developmental Biology Center from 1977 to 1980. Following a 6-year period as an Assistant Professional Research Biologist at the University of California, Irvine, he joined Texas Tech University as an Associate Professor of Biology in 1987. He was awarded the President's Excellence in Teaching Medal from Texas Tech University in 1995 and is the author of Models for Embryonic Periodicity and Imaginal Discs: The Genetic and Cellular Logic of Pattern Formation. Read More Read Less