Cellular antibody in mice bearing Ehrlich cancer. I. A quantitative study on antitumor activity of cellular antibody in vitro

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Abstract

<p>For the purpose to clarify whether or not the cells of regional lymph nodes and spleen of the tumor bearing individual develop the antitumor activity the author observed the proliferation of JTC-11 cells in vitro by mixing with the lymph-node and spleen cells from the mice bearing Ehrlich ascites tumor in solid form. After 24- to 48 -hour incubation the antitumor activity was estimated from the number of proliferated JTC-11 cells. As the result, it has been found that one week after implantation of tumor the regional lymph-node cells acquire the inhibitory activity against the proliferation of JTC-11 cells. The spleeen cells also show a marked inhibitory effect on the turner cell proliferation but two weeks after implantation these inhibitory activities of the cells both from lymph node and spleen are largely retarded three to four weeks when the host is emanciated by the growing tumors. Discussions are made on the inhibitory mechanisms from the viewpoint of immune reaction and on the transplantability of tumor cells without any rejection.</p>

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