____________interferon, produced by T lymphocytes, activates cellscalled _____________ and is involved in destroying viruses.a. Gamma, fibroblasts b. Beta, lymphocytes c. Alpha, natural killer cells d. Beta, fibroblasts

Select the incorrect statement regarding the temperature of the immune system. A. Interleukin-1 is a pyrogen, which can cause the neurons in the hypothalamus to raise the body's temperature, producing a fever. B. Fevers cause the liver and spleen to store sodium and potassium which bacteria need for their growth and metabolism. C. Fevers above 105∘∘F can be fatal. D. Fever contributes to the body's defense by stimulating phagocytosis E. When macrophages encounter invading cells, they release interleukin-1, which is carried to the brain by the circulatory system.

_____________-is an example of an inflammatory mediator that stimulateschemotaxis.a. Endotoxin b. Serotonin c. A fibrin clot d. Interleukin-2

of the choices, which cells stimulate directly B cells to divide and produce antibodies? a. mast cells b. marcophages c. Nk cells d. TH cells