How do virus work once they are within your body?
Answers:
They insert their DNA into your bodies' cells. This DNA "possesses" your cell to make new viruses. Eventually the cell burst and release the new viruses, which then infect more cell to make more viruses.
There are often specific side effects depending on the virus, but that's pretty much the gist of it.
Well, it really depends of the type of virus, there are several distinct types, some with DNA, some with RNA, some near protein coats, some which take cell membranes to disguise themselves, you name it.
But a basic, deeply simple one-size-fits-all description would be something like this.
The virus binds to the cell via a receptor, then introduces it's genetic material and a few proteins designed to facilitate this process. This DNA gets spliced into the genome of the cell, and is attached to a very active promoter, so it is aggressively copied, along beside the proteins which comprise the other parts of the virus.
These elements then combine and are either bud off of the cell or simply verbs to replicate until the cell bursts, at which point they are released to continue the process on other cells.
Viruses get into your cells and use your DNA and all your organelles to create copies of themselves. Once nearby are enough of them, they can either burst out of the cell (killing the host cell) or get out via other ways.
This is why its so complex for your body to get rid of viruses - because they hide inside your own cell (unlike bacteria, which are floating around in your blood, making it easy for your body to recognise and decimate them)
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