Among lymphocytes, which cells are typically the larger ones?

1. Lymphocytes span a wide size range, with large cells around 10 to 14 micrometers and small cells around 6 to 9 micrometers. 2. The larger lymphocytes are typically natural killer cells. 3. The smaller ones are either B or T cells, and they cannot be told apart on a normal blood smear. 4. Plasma cells are a form of B cell that secretes antibodies, so they sit on the small side of the split. 5. Mature T cells are likewise among the smaller lymphocytes. 6. Size is therefore a usable clue only for separating natural killer cells from the rest, not for separating B from T. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 18 "The Cardiovascular System: Blood", section 18.4 Leukocytes and Platelets_