When a tissue is injured, which of the following first releases?
a) interferons
b) interleukin-II
c) histamine
d) perforins
Histamine release causes…….
a) vasodilation
b) increased capillary permeability
c) smooth muscle contraction
d) all of these
Antipyretic drugs create their effect by inhibiting prostaglandin production in the……..
a) thymus
b) spleen
c) hypothalamus
Which of the following is/are the specific defense/s?
a) first line of defense
b) second line of defense
c) third line of defense
d) all of these
Third line of defenses are carried out by
a) macrophages
b) T-lymphocytes
c) B-lymphocytes
d) both b and c
Which of the following activate/s T cells?
a) interleukin-I
b) interleukin-II
c) histamine
d) perforins
