?????? 45 1 ????? (-??) A developing B cell that has successfully passed the first checkpoint in development, going from the pro-B cell stage to the pre-B cell stage, expresses what structure on its cell surface? Pre-B cell receptor (pre-BCR) Kappa or lambda light chain B cell receptor (BCR) The mu Ig heavy chain alone
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At this stage, the B cell rearranges its immunoglobulin heavy chain genes. This rearrangement results in the production of a mu Ig heavy chain. Show more…
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