Question 1
Which of the following is
true of chemokines?
◦ They are substances used to signal between leukocytes.
◦ They ensure production of enough leukocytes.
◦ They are chemotactic factors for leukocytes.
◦ They are involved in B lymphocyte activation and differentiation.
◦ They cause basophils and eosinophils to degranulate.
Question 2
Vaccination triggers an immune response which produces ________ immunity.
◦ natural active
◦ artificial passive
◦ artificial active
◦ natural passive
◦ both active and passive