Match the immune system line of defense with its correct description.
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Health, 21.06.2019 22:30, orteg555a
Which of the following is a true statement? a. the male sex hormone is called estrogen. b. the female sex hormone is called testosterone. c. both sexes manufacture some amount of the sex hormone associated with the opposite sex. d. only males secrete testosterone and only females secrete estrogen
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Health, 22.06.2019 10:30, pippyysanchezz
Which of the following is an important function of child-directed speech? (a) it captures the infant’s attention and maintains communication. (b) it reduces the occurrence of infantile amnesia for the earliest memories of infancy. (c) it reduces the need for reciprocal interaction between caregivers and children. (d) it assists in prolonging rem sleep in infants.
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Health, 23.06.2019 18:20, fernandar44
Some bacteria injure cells by giving off poisons called pathogens antibodies phagocytes toxins
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