HIV Virus Lifecycle
HIV is one of a group of viruses known as retroviruses.
These viruses store their genetic material as RNA, a
single strand of genetic code. Most other organisms have
DNA, a double strand of genetic code, instead. When HIV
infects a human cell, its RNA has to be converted to DNA,
so that it can use the human cell's genetic machinery to
make new virus. The
virus has a central core consisting of a protein coat
enclosing RNA and the enzymes necessary for viral
replication. The core is surrounded by an outer membrane,
from which protrude many protein spikes (envelope
proteins).
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