Skip navigation
Profiles in Science
Home | Collection Home | Search | Browse | What's New | About

The Joshua Lederberg Papers

Title:
Letter from Joshua Lederberg to Louis Dienes Annotation pdf (96,180 Bytes) ocr (10 Bytes)
Number of Image Pages:
1 (96,180 Bytes)
Date:
1946-10-09 (October 9, 1946)
Creator:
Lederberg, Joshua
Recipient:
Dienes, Louis
Rights:
This item is in the public domain. It may be used without permission.
Subject:
Medical Subject Headings (MeSH):
Mutation
Genetics, Microbial
Relation:
Lederberg Grouping: Correspondence A
Box Number: 6
Folder Number: 10
Unique Identifier:
BBAACQ
Accession Number:
1
Document Type:
Letters (correspondence)
Language:
English
Format:
application/pdf
image/tif
Physical Condition:
Good
Series: Correspondence, 1935-2002
SubSeries: 1925-1947
Folder: Dienes, Louis
Metadata Last Modified Date:
2005-04-12

Annotation by Joshua Lederberg:
Node: Dienes, Louis. Microbiologist at MGH, long preoccupied with
morphological studies of "L-forms" (Large bodies?); cf also
Klieneberger-Nobel;  These and their "filtrability" were all to obvious
options for a morphological correlate of sexuality, or later of the
filtrable agent (FA) in transduction that later proved to be phage.
Merry chase!; Now esp. after  P-70. generally accepted as protoplasts
or spheroplasts - they are indeed fusible in eukaryotes and gram-positive
bacteria.  L-forms no longer susceptible to wall-targeted antibiotics,
perhaps also complement, may play a role in cryptic infections.
Mellon had called similar things "zygospores".
oI don't know what he finally made of the wall-defect story.
KW:  L-forms; Proteus; Carl Beam; chloral hydrate; swarm;


?? mechanism; cf phenol.

jl 7/5/98;  4/18/99


U.S. National Library of Medicine, 8600 Rockville Pike, Bethesda, MD 20894
National Institutes of Health, Department of Health & Human Services
USA.gov, Copyright, Privacy, Accessibility
Comments, Viewers, Acknowledgments