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外周血淋巴细胞被有丝分裂原刺激后能同时表达CD4和CD8两种抗原。进一步用克隆的外周淋巴细胞亚群实验发现,CD4~+淋巴细胞亚群能产生CD4~+辅助细胞和CD8~+抑制细胞两种细胞克隆。为了明确活化抗原
Peripheral blood lymphocytes stimulated by mitogen can express both CD4 and CD8 antigen. Further cloning peripheral lymphocyte subpopulation experiments found that CD4 ~ + lymphocyte subsets can produce CD4 ~ + helper cells and CD8 ~ + suppressor cells of two cell clones. In order to specifically activate the antigen