Summary
A latex bead technique modified for measuring the plaque-forming cell (PFC) response to teratocarcinoma tumor antigens in syngeneic animals is described.
With this method one can detect both the primary (IgM) and the secondary (IgG) immune response to tumor antigens. Optimal detection of the PFC response depends on the proper ratio of sheep red blood cells to latex beads and the dose of tumor cell antigen used for immunization. The presence of fetal calf serum interfered with immunization of animals and the coating of the latex beads with the tumor cell antigens. The plaques obtained in response to immunization with teratocarcinoma cell antigens varied in size, probably reflecting the complex immune response to more than one class of antigens on tumor cells.
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Bagasra, O., Eppright, B.M. & Damjanov, I. Latex bread technique for detection of the plaque-forming cell response to teratocarcinoma tumor antigens. Cancer Immunol Immunother 15, 27–31 (1983). https://doi.org/10.1007/BF00199458
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DOI: https://doi.org/10.1007/BF00199458