Which of the following statements is TRUE? A. Lymphatic vessels and veins have valves B. All Lymphocytes are part of our Non-specific immune defenses C. Chicken pox vaccines involve the

Which of the following statements is TRUE?
A. Lymphatic vessels and veins have valves
B. All Lymphocytes are part of our Non-specific immune defenses
C. Chicken pox vaccines involve the injection of antibodies
D. Spleens are lymph nodes which drain lymph fluid back to the blood circulation

do complement proteins, inflammation and fever have in common?
A. All are part of the specific defenses mechanisms of the immune system (also called adaptive immunity)
B. All are processes that occur in lymph nodes
C. All occur as part of the non-specific defenses
D. All occur as a direct result of antigen processing in an antigen processing cell