Abstract
Accumulation of mutations and changes in the immune system could happen in aging, for example, due to environmental pressures. It was seen that there is an accumulation of B-1 cells in bone marrow and lymphoid organs of old mice and our group showed that the B-1 cell progenitor (B-1p - Lin-CD45R-CD19+CD93+) population increases in the bone marrow of healthy old C57Bl/6 mice (with 30 weeks…