Happy Birthday, Irving Geis! Born on this day in 1908, Irving was a gifted artist who helped illuminate the field of structural biology with his iconic images of DNA, hemoglobin, and other important macromolecules
https://t.co/AKdYoscAyJ

21 49

Nitric oxide is attached to a conserved cysteine in hemoglobin and then released to control the flow of blood. More at Molecule of the Month: https://t.co/nOnxmxMRee

Last week to enter to win a book signed by creator David Goodsell! Enter: https://t.co/xhL7sJTh67

4 7