Which of the following structures is made of keratin? comedone nail plate furuncle melanin
a) comedone
b) nail plate
c) furuncle
d) melanin

Which method of measuring weight involves comparing a person is weight and height

What surgery do you have to get for endometriosis and does it hurt.

Which statement is true about common childhood infectious disease? a. children should always be given antibiotics to treat an infectious illness. b. frequency of infectious illnesses usually increases as children grow older. c. having a minor infectious illness weakens a child's immune system. d. infectious illnesses are usually mild and require no medication.