If NK cells are engaged in immune surveillance, how do cancer cells spread?
What will be an ideal response?
Cancer cells can mutate such that either they do not display tumor-specific antigens, or they secrete chemicals that can destroy NK cells. This ability to escape detection is called immunological escape.
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For each of the following species, list the term for a castrated male. sheep
What will be an ideal response?
Centromeres of replicated chromosomes separate during mitotic
A) prophase. B) telophase. C) metaphase. D) anaphase.
Which of the following types of glands secretes an oily substance into the hair follicles, to keep the hair and skin surface lubricated and water-resistant?
A. Sebaceous glands B. Sudoriferous glands C. Eccrine sweat glands D. Ceruminous glands E. Apocrine sweat glands
Alveolar ventilation (VA) refers to the
A) movement of air into and out of the lungs. B) amount of air reaching the alveoli each minute. C) movement of dissolved gases from the alveoli to the blood. D) movement of dissolved gases from the blood to the alveoli. E) utilization of oxygen by alveolar cells to support metabolism.