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If we inject an antigen in strain a mouse and then extract its antigen reacted macrophage then to these antigen reacted macrophages we provide tcells from strain a, strain b and f1 progeny of strain a and b in which case tcell of which strain will be activated? 1. strain A only2. strain B only3. strain A and f1 progeny 4. strain B and f1 progeny |
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Answer» tion:Because T cells recognize only fragmented antigens displayed on cell surfaces, antigen processing must occur before the antigen fragment, now BOUND to the major histocompatibility complex (MHC), is transported to the surface of the cell, a PROCESS KNOWN as presentation, where it can be RECOGNIZED by a T-cell receptor. |
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