Q: immun: What is the name of random changes in DNA during formation of memory cells?
A: somatic mutation
Q: immun: What metal ion of semen plays anti-bacterial role?
Q: immun: How is antilymphocytic serum obtained?
A: injecting horses with spleen suspension
Q: immun: What are the two kinds of phagocytes (size, shape of the nucleus, etc.)?
A: microphages (granulocytes)
A: macrophages (monocytes, histiocytes)
Q: immun: What happens to plasma cells when the immune response is over?