If one wanted to measure the number of eosinophils in a blood sample, he or she would conduct the following test:
A. hematocrit
B. electrophoresis
C. complete blood cell count
D. differential white blood cell count
查看答案
All of the following are part of the first line of defense against invaders except
A. tears
B. saliva
C. neutrophils
D. skin
Damaged cells release a vasodilator substance called
A. interleukin
B. interferon
C. histamine
D. complement
Which of the following cells mature in the thymus?
A. T cell
B cell
C. plasma cell
D. natural killer cell
Sensitivity to animal-derived immune serum may lead to a serious condition called
A. serum sickness
B. hay fever
C. Kaposi sarcoma
D. rejection syndrome
微信支付 
支付宝支付