Severe combined immunodeficiencies (SCIDs) are due to
A. autoantibodies.
B. delayed hypersensitivity.
C. a genetic defect in the development of both T cells and B cells.
D. congenital absence or immaturity of the thymus gland.
E. failure of B-cell development and maturity.
Answer: C
You might also like to view...
When antiseptics and disinfectants are compared, antiseptics are generally
A. unpredictable in toxicity. B. equally as toxic. C. more toxic. D. less toxic.
The process in fungi that allows nutrients to flow from food-absorbing parts of the fungal body to other, nonabsorptive,
parts is referred to as ____.
a. osmosis b. karyogamy c. cytoplasmic streaming d. plasmogamy e. mutual symbiosis
How are poplar trees being used to remove the toxin TCE from the soil at J-field?
What will be an ideal response?
What type of symbiotic relationship is exemplified by mycorrhizal fungi?
A. Parasitism B. Commensalism C. Atavism D. Mutualism