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Efferent enhancement of a methylcholanthrene-induced Sarcoma transplantable in strain 13 guinea pigs

✍ Scribed by I. Berczi; H.-M. Tsay; A. H. Sehon


Publisher
John Wiley and Sons
Year
1976
Tongue
English
Weight
303 KB
Volume
6
Category
Article
ISSN
0014-2980

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✦ Synopsis


Abstract

The immunobiology of an antigenic methylcholanthrene‐induced sarcoma (MC‐D) of inbred strain 13 guinea pigs has been investigated. The induction of concomitant immunity by growing MC‐D tumors was indicated by the suppression of small tumor inocula in the presence of a large tumor cell dose and by the regression of intradermal tumor nodules. Furthermore, it was demonstrated that this tumor was coated with antibody in vivo. Previous studies showed that MC‐D tumors were infiltrated with killer T cells which were capable of complete tumor destruction in vitro, but could never induce spontaneous regression in vivo. On the basis of all these facts, antibody‐mediated efferent enhancement is proposed to be the major escape mechanism of this tumor.


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