What is the infective stage for Echinococcus granulosis?
A. Egg
B. Adult
Cysticercus
D. Cercaria
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What is the infective stage for Taenia saginata?
A. Egg
B. Adult
Cysticercus
D. Cercaria
Which of the following cells down-regulates cellular immune response?
A. Th1 cell
B. DC
C. NK cell
D. Treg
E. B cell
Cells that secrete perforin and granzyme are
A. CTLs and B cell
B. CTLs and NK cells
C. B cells and NK cells
D. CTLs and macrophages
E. B lymphocytes and macrophages
Which of the following is caused by type I hypersensitivity?
A. Hyperthyroidism
B. Urticaria (荨麻疹)
C. Serum Diseases
D. Contact dermatitis
E. Blood transfusion reaction
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