Rejection of the embryo/fetus
a. is blocked by Fas ligand binding to cytotoxic T cells causing apoptosis of these cells.
b. is blocked by the destruction of tryptophan.
c. is blocked by an increase in the number of regulatory T cells.
d. all of these.
D
You might also like to view...
Any given protein contains binding sites for only one kind of ligand.
Answer the following statement true (T) or false (F)
Alkalosis usually leads to unconsciousness and coma
Indicate whether the statement is true or false
What role do the arytenoid cartilages play in speech?
A. Slight movements of the cartilages help shape sound into intelligible speech. B. Sound is produced when the cartilages are adducted, and passing air causes them to vibrate. C. When they rotate, they either adduct or abduct the vocal folds and influence pitch. D. They control the movement of the corniculate cartilages during speech production. E. They provide structural support for the vocal folds.
Brodmann's map of the cerebral cortex:
A. is based on recordings of cortical evoked potentials B. is based on regional variation of the cortical layers C. has no correlation with functional organization D. numbers the regions from frontal pole (area 1) to occipital pole (area 47) E. numbers the regions from left (area 1) to right (area 47)