What Is Epigenetics?
Physician-scientist Omar Abdel-Wahab explains epigenetics, a growing field based on the study of genetic changes that are not part of the DNA code, and how it relates to cancer.
DNA wrapped around histones
How to Build a Worm, in 3-D High Definition
Stunning movies captured in the lab of computational biologist Zhirong Bao reveal how cells divide, grow, and move around, as in a carefully choreographed dance, during the development of a nematode worm embryo.
Pictured: Nematode Worm Embryo