Guinea pig testicles were extracted with acetic acid; the extract was purified by removing material in consecutive precipitations with 30 per cent saturated ammonium-sulfate, trichloracetic acid, and chloroform. The solution so purified, when administered with complete adjuvants, was highly active in inducing impairment of spermatogenesis in guinea pigs. The activity resisted autoclaving at 15 pounds' pressure for 20 minutes, proteolytic enzymes, and formamide. Anaphylactic shock and cutaneous reaction to the purified homologous extract occurred in guinea pigs sensitized by the extract combined with adjuvants. For the production of aspermatogenesis it was essential to incorporate killed mycobacteria into the water-in-oil emulsion containing the antigen; but anaphylactic sensitization did not require the presence of mycobacteria.
ASPERMATOGENESIS, ANAPHYLAXIS, AND CUTANEOUS SENSITIZATION INDUCED IN THE GUINEA PIG BY HOMOLOGOUS TESTICULAR EXTRACT
J. Freund,G. Thompson,M. Lipton
Published 1955 in Journal of Experimental Medicine
ABSTRACT
PUBLICATION RECORD
- Publication year
1955
- Venue
Journal of Experimental Medicine
- Publication date
1955-06-01
- Fields of study
Biology, Medicine, Chemistry
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
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