Biology, 22.11.2019 22:31 mariap3504
Marina was immunized against chicken pox when she was young. which of the following statements is true?
marina was exposed to a weak form of chicken pox antigen.
the immunization provided marina with passive immunity.
o marina needs to be immunized again because antibodies do not last long in the body.
since she was immunized, it is impossible for marina to contract chicken pox
Answers: 1
Biology, 22.06.2019 13:00
Astudy by solloch and et. al., in 2017, gives the map above which shows the frequency of alleles with a ccr5-delta32 mutations over 87 different countries. this mutation deletes the presence of a co-receptor (ccr5) on the outside of human t-cells (lymphocytes). some viruses, such as the one responsible for the black death and human immunodeficiency virus (hiv), require this receptor for attachment to host cells during the infection process. the black death was an epidemic that passed over northern europe during the 14th century killing nearly 60% of europeans. according to this information, which explanation best explains why northern europeans show a greater immunity for hiv than some other parts of the world?
Answers: 1
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You are shown 2 samples of the earthes crust . the first is denser than the second . which most likley is oceanic crust
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Marina was immunized against chicken pox when she was young. which of the following statements is tr...
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