The B receptor test for ______ signal

The B receptor test for ______ signal for ________ a) successful production of a complete heavy chain the transition from the pro-B cell to the pre -B cell stage b)successful production of a complete light chain ..the transition from the pro-B cell to the pre-cell stage c)successful production of a complete heavy chain from the pre-B cell to the mature B cell stage d) none of the above B cells require 2 signals for activation. The first signal is the recognition of antigen by the B cell receptor and the second signal comes from T follicular helper cells for T-dependent antigens. Knowing this, name 2 of the types of second signals that are provided by follicular helper cells during B cell Activation. ___________ and ____________ What enzyme expressed in B cells is responsible for both class switch recombination and somatic hypermutation? SCIENCE HEALTH SCIENCE NURSING NURS 120

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