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Immunological characteristics of leukemia and lymphoma in allogeneic cell immunity: Growth of syngeneic tumors in rats immunized with allogeneic cells

✍ Scribed by Masuo Hosokawa; Tetsuro Yamashita; Eiki Gotohda; Noritoshi Takeichi; Takao Kodama; Hiroshi Kobayashi

Publisher
John Wiley and Sons
Year
1978
Tongue
French
Weight
666 KB
Volume
22
Category
Article
ISSN
0020-7136

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✦ Synopsis

Abstract

The growth of transplanted tumors was strongly inhibited in syngeneic Wistar King Aptekman (WKA) rats immunized with allogeneic tumor cells from Donryu rats. This phenomenon of non‐specific immunity against tumors is referred to as “allogeneic cell immunity”. However, an exception to the “allogeneic cell immunity” was observed in leukemias and lymphomas. Four transplanted leukemia or lymphoma lines were not inhibited in syngeneic rats immunized with allogeneic tumor cells. Furthermore, immunization with allogeneic leukemic cells had only a relatively weak inhibitory effect upon a syngeneic fibrosarcoma and no inhibitory effect upon leukemias. In WKA rats immunized with allogeneic lymphoid cells from Donryu rats, the growth of fibrosarcoma, but not of lymphoma, was inhibited. Using transplantation experiments, both fibrosarcoma and lymphoma were defined as antigenic tumors in WKA rats. Transplantation of mixtures of syngeneic tumor cells and allogeneic tumor cells in WKA rats confirmed the above findings. These results revealed that leukemia and lymphoma differ from non‐leukemic tumors in regard to “allogeneic cell immunity”.

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