Helper b cells promote cytotoxic t cell survival and proliferation independently of antigen presentation through cd27/cd70 interactions. An antigen-presenting cell (apc) or accessory cell is a cell that displays antigen complexed helper t cells can recognize exogenous antigen presented on mhc class ii cytotoxic t cells can recognize endogenous antigen presented on. Applescript scripts for assisting in the translation of a presentation's presenter notes using the online google translate service.
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