Biology, 26.07.2019 21:00 tytybruce2
Hydrogen has three isotopes 1h, 2h, and 3h. what is the difference between these three isotopes?
Answers: 1
Biology, 21.06.2019 17:00, whocares1234
What are some aquatic organisms that live in cold water temperatures?
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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?
Answers: 1
Hydrogen has three isotopes 1h, 2h, and 3h. what is the difference between these three isotopes?...
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