Hi Dixie!

I'm sorry you didn't get time to drop back to the Genetics Building te pick
up cultures. Whenever you're ready, let me know again what you can use in the Sal
Mobella variants. Under separate cover I'm sending some reprints on this mbjject;
my dossiers lack a card with your name-- if you could let me kuww which, if anyof our
reprints you Blready have,I'll mke up any deficits.

P, Grabar visited here, and in a brief conversation had a suggestion on the
flagellar immnoalim ntation-- i.¢., that a proteinase would have the appropriate
wread specificity. At neutral pH some of these enzymes will form complexes with their
substrates without quickly splitting them. Sounds provocative.

Yours

Joshua Lederberg