Abstract：
:Lymphoid cell subpopulations infiltrating into autografts of methylcholanthrene-induced sarcomas in rats immunized with autologous tumor cells were identified in terms of immunohistochemical and cytofluorographic techniques using various monoclonal antibodies raised against different classes of rat lymphohemopoietic cells. These antibodies included in this study directed to rat T-cell antigens corresponding to mouse Lyt-1 (RLyt-1) and Lyt-2,3 antigens (RLyt-2) and to W3/25 antigen expressed on a particular subset of rat T-cells with helper function, as well as to rat granulocyte-macrophage-specific antigen (RGM-1). Histological studies demonstrated that the autografts of highly antigenic tumors introduced to the primary hosts were completely rejected following massive immigration of lymphoid cells into the tumor sites, which was not observed in progressively growing, minimally antigenic tumors. These lymphoid cells found within regressing highly antigenic tumor autografts were identified mostly to be T-cells bearing RLyt-1 (approximately 70%), and more than two-thirds of these T-cells expressed RLyt-2 antigen. In contrast to T-cells, macrophages and B-cells, each of which could be recognized by the presence of either RGM-1 antigen or immunoglobulin on their cell surfaces, appeared to have a minimal role in the rejection of autochthonous tumors, as reflected by their less frequent appearance within the tumor tissues during the rejection process.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Ishii Y,Matsuura A,Takami T,Uede T,Ibayashi Y,Uede T,Imamura M,Kikuchi K,Kikuchi Ysubject
Has Abstractpub_date
1984-09-01 00:00:00pages
4053-8issue
9eissn
0008-5472issn
1538-7445journal_volume
44pub_type
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