Biology, 05.12.2019 00:31, lanc3r3vo

What are three practices proven to be effective in lowering the risk of becoming infected with an sti.

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Biology, 22.06.2019 06:30, DwayneLeonard618

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Biology, 22.06.2019 13:00, mimivenga

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?

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What are three practices proven to be effective in lowering the risk of becoming infected with an st...