ee hugust 2h, 1988.

Dr. Gladys’ le Hobby,

Chas. Pfizer Labae» .

Brooklyn, ele | oe .
7 Dear Dy, Hobby, ce |
CPs lately, we have beon devaLoping a | thd for the Asolstion of bLlochamieal.

fo, i ~ gutents, in naoterda whieh, dependa in port on the kacteriaidal «ection of penta
Ba! . oblin. Unfortunately, 7 'va been eapaoinl.ly interested in F, coll ant other a
oo ° ; ee : gvan-nopeatives, end of conros very hich consentretiono have boen needed. More.

e os, | Clstavbing, hovover, hea heen a very considerahloe vantahility in our results; :
on using eimilor olde end fnoowla, youna grovine cvlturas of ool’ sre very ropldly
- 4 b ~ etortl, Lod some degs and hot others, TE you would, T mould approoiate your
: ve halp 4n the folloning yespectes
1). Sua ration, if unr, af othor antimetomirl agents whiah show a differen a
| tial bootorte! Adel. effect on crowing and resting popwlattons, esponinily for fF, colt,

2)e Sug, geatdons from your on exnerisnse. wd Ath ool or with | Staph oni detatted |

 

 

ee uh “condi tons for bootorfaldal, effecte nth pontosl Win, end

4) reprints, as avad) Able, of your: papers Fhioh dow sith this qnestdon, |: oo

    

“ 7 oe ce E frowld be very pratatnt, for thts nagistencs.
Ue re ea Mth best, requnis, | | .

PO Yours sinsoroly, 9 Pe

 

"Joshua Lederberg —
" Asedetant Professor of Genetics.

~