How does the body prevent the immune system from destroying the body's own cells?
What will be an ideal response?
B cells capable of making antibodies to our antigens are selectively killed off during early development. Those that survive are held in check by suppressor T cells.
You might also like to view...
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
In humans, moving a respiratory medium over external respiratory surface best defines ________.
A. perfusion B. ventilation
The process of producing sex cells is
A. fertilization. B. mitosis. C. gametogenesis. D. ovulation.
Terrestrial organisms lose water through evaporation. In what ecosystem might an entomologist find a good study organism to examine the prevention of water loss?
A) wet rain forest B) desert C) prairie D) chaparral