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.

Biology & Microbiology

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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

Biology & Microbiology

In humans, moving a respiratory medium over external respiratory surface best defines ________.

A. perfusion B. ventilation

Biology & Microbiology

The process of producing sex cells is 

A. fertilization. B. mitosis. C. gametogenesis. D. ovulation.

Biology & Microbiology

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

Biology & Microbiology