Second line of defense is……..
a) non specific in response
b) specific in response
c) both option a and b
d) none of these
Which of the following is/are included in the second line of defense?
a) macrophages, neutrophils
b) natural killer cells
c) complement system
d) all of these
Second line of defense operates which antigen?
a) on the skin surface
b) enters the blood
c) penetrates the skin
d) none of these
Monocytes and neutrophils are the types
of………
a) epidermal cells
b) RBCs
c) WBCs
d) glandular cells
Monocytes are released by the…….
a) spleen
b) thymus
c) bone marrow
d) liver
Which of the following cells flow in blood stream and turn into macrophages on entry into the tissue?
a) lymphocytes
b) neutrophils
c) leukocytes
d) monocytes
