Official websites use .gov A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
By 1970, Marshall Nirenberg had turned his attention to neurobiology and developed valuable microassays for enzyme study. In this letter, Jacob requests information from Nirenberg on techniques and protocols for enzyme and transmitter assays in mouse nervous system and mouse cell culture research. He informs Nirenberg that he has left his own work on nematodes and asks what is new with Nirenberg's own nematode or neuroblastoma research.