T and B lymphocytes ________.
A. are polymorphonuclear
B. are involved with specific immune function
C. proliferate excessively in leukopenia
D. are most active against parasitic worms
Answer:B
T and B lymphocytes ________.
A. are polymorphonuclear B. are involved with specific immune function C. proliferate excessively in leukopenia D. are most active against parasitic worms