Highly lytic in vivo primed cytolytic T lymphocytes devoid of lytic granules and BLT-esterase activity acquire these constituents in the presence of T cell growth factors upon blast transformation in vitro.


Demonstration of C-like "rings," lytic granules, and the Ca2+-dependent lytic proteins--perforin/cytolysin--thereof, in certain cytocidal lymphocytes has led to the hypothesis of a mechanism of lytic granule-exocytosis and a common terminal lytic step in lymphocyte and C-induced lysis. However, neither cytolytic granules, nor formation of C-like rings… (More)


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