#Question id: 1634
#Section 2: General Biology
What is the main reason an experimental animal treated with X-rays can act as a living test tube for lymphocyte transfer experiments?
#Question id: 1635
#Section 2: General Biology
What is immunological unresponsiveness to self-antigens called?
#Question id: 1637
#Section 2: General Biology
Protective antibodies against infectious agents are often:
#Question id: 1638
#Section 2: General Biology
Intracellular parasites within macrophages are killed more readily in the presence of:
#Question id: 1639
#Section 2: General Biology
T-cell surface receptors for antigen partly recognize:
#Question id: 1640
#Section 2: General Biology
An immune response against grass pollen often involves: