A decrease in which population of lymphocytes would impair all aspects of an immune response?
A) cytotoxic T cells
B) plasma cells
C) B lymphocytes
D) suppressor T cells
E) helper T cells
E) helper T cells
You might also like to view...
A tissue's function is to direct flow of a substance to an organ without losing any of the substance or letting any other substances contact it. Tight junctions are most likely to be found between the cells of this tissue.
Answer the following statement true (T) or false (F)
Birds have natural biting and screaming behaviors because in the wild they:
a. are natural prey c. want to be dominant b. have a social ranking d. all of the above
Which of the following hormones is released to decrease blood pressure?
What will be an ideal response?
Suckling by an infant triggers a positive-feedback mechanism that maintains lactation by stimulating the ________.
A. posterior lobe of the pituitary to secrete oxytocin B. contraction of the milk ducts C. anterior lobe of the pituitary to secrete prolactin D. hypothalamus to secrete prolactin-releasing hormone