Helps build two main Characteristics out of two choices to classify and unidentified organism
It has a dorsal nerve chord
Answer: B cells
Explanation:
lymphocytes produce antibodies - proteins (gamma globulins) that recognize foreign substances (antigen) and attach themselves to them. B lymphocytes (or B cells) are each programmed to make one specific antibody. When a B cell comes across its triggering antigen it gives rise to many large cells known as plasma cells. Each plasma cell is essentially a factory for producing antibody
