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. 1970 Aug;66(4):1170–1174. doi: 10.1073/pnas.66.4.1170

ACCELERATION BY THYMOSIN OF THE DEVELOPMENT OF RESISTANCE TO MURINE SARCOMA VIRUS-INDUCED TUMOR IN MICE*

Martin Zisblatt 1,2,†, Allan L Goldstein 1,2,‡, Frank Lilly 1,2,§, Abraham White 1,2
PMCID: PMC335802  PMID: 5273447

Abstract

The development of resistance to progressive tumor growth and the effect of a thymic extract upon this developmental process were examined in CBA/Wh mice. Inoculating mice of various ages with murine sarcoma virus (Moloney) permitted the assessment of the period of time postnatally at which the animals developed a threshold level of resistance to progressive tumor growth. Resistance in CBA/Wh mice, at the virus dose used, was first detected at approximately two weeks of age and was completely developed at five weeks.

Thymosin, a soluble calf thymic fraction, when administered to neonatal mice beginning on the second day of life, significantly accelerated the rate of development of resistance to progressive tumor growth. The data suggest a humoral role for the thymus in the development of tumor immunity, and that the normal development of cell-mediated immunological competence can be accelerated through the use of thymus-derived extracts.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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