| Description | Correspondence with Guido Pontecorvo on a number of topics, including yeast strain testing, fibrocystic diseases of the pancreas in newborns, Pontecorvo's application to Cambridge, and nominations for Royal Society lectures and professorships. Enclosed are a draft abstract of the paper "Measurement of pleiotropic effects in phenylketomunia" and a copy of Pontecorvo's curriculum vitae. |