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Hershberger, R J; Mueller, C; Gershenfeld, H K; Weissman, I L (1989). A serine protease-encoding gene that marks activated cytotoxic T cells in vivo and in vitro. Current topics in microbiology and immunology, 140, pp. 81-92. Springer 10.1007/978-3-642-73911-8_7
