B lymphocyte (B Cell)

A plasma B cell is a B cell that has been activated to proliferate and produce antibodies against a specific antigen.

A memory B cell is a B cell that lives a long time after an infection to provide long lasting immunity against that specific antigen.

They both originate from the same B cell in your secondary lymph system. Once activated the specific B cell will proliferate into plasma B cells and memory B cells.

B effector cell.

plasma cell

A being quite more active than B.

Cell A is part of an organ that does more work than Cell B.

Cell B does less work than Cell A.

is large cell b-cell lymphoma agent orange presumptive