Any apoptotic process in a B cell that is mature, having left the bone marrow.
Synonyms:
exact_synonym:
apoptosis of mature B cells; apoptosis of mature B lymphocytes; mature B cell programmed cell death by apoptosis; mature B lymphocyte apoptosis; mature B lymphocyte programmed cell death by apoptosis; programmed cell death of mature B cells by apoptosis; programmed cell death of mature B lymphocytes by apoptosis; programmed cell death, mature B cells; programmed cell death, mature B lymphocytes