All of the following are true regarding NK cells EXCEPT
A) they are a type of lymphocyte.
B) they are found in tissues of the lymphatic system.
C) they have the ability to kill infected body cells and some tumor cells.
D) they destroy infected body cells by phagocytosis.
E) they release toxic substances that cause cell lysis or apoptosis.
D
You might also like to view...
A linkage map illustrates the exact physical locations of genes on a chromosome
Indicate whether the statement is true or false
A study of the genomes of dogs from around the world indicated that:a
the dogs’ closest relative is the gray wolf. b. all dogs appeared to develop from a mixture of wolf and coyote. c. some dogs evolved from the coyote and some from the wolf. d. all dogs appeared to evolve from a mixture of the jackal and the wolf. e. all dogs appeared to evolve from a mixture of the wolf, jackal, and the coyote
If a person were stranded for two days with virtually no drinking water, you would expect the following to occur
A) a decrease in antidiuretic hormone (ADH) secretion B) production of dilute urine C) production of concentrated urine D) a decrease in aldosterone secretion
Which of the following can be used to estimate the number of microorganisms in a culture?
A. Measurements of microbial biomass B. Direct counts of microbial cells C. Counts of viable cells using colony growth procedures D. All of the choices are correct.