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Q: How many viruses and virus variants exist today?
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What is exogenous virus?

I believe, exogenous virus exist as: "replication competent viruses that are transmitted horizontally in mice, while endogenous viruses exist as germline sequences that are usually not replication competent by may recombine with exogenous viruses during the course of infection." This would refer to exogenous retroviruses.


Who has a virus Roblox or Facebook?

No, Neither Roblox of Facebook have viruses. People on Facebook do sometimes post links to viruses, and there are scams that exist on Facebook, but there are no viruses on Facebook itself. Roblox does not have viruses either. It does have virus scripts within the game, but those cannot actually harm your computer.


How are bacteria different from viruses?

viruses are not alive. APEX


How many teenagers found with the virus?

There are many viruses in the world today. It is impossible to say how many teenagers were found with the virus without knowing which virus you are referring to.


Are virus Unicellular or multicellular?

Rabies is neither unicellular or multicellular, because it is a virus. Viruses are not cellular and this person is lying


What viruses break into cells to reproduce?

All viruses do that. That's what makes a virus a virus.


How does a virus live can they exist on their own?

Without a host cell a virus is not exactly alive. But yes, viruses can exist alone but they do nothing. However many viruses are fragile and breakdown on exposure to air, others can remain for years on a surface just waiting for a host to infect.


What kind of virus attacks only viruses?

Viruses do not attack viruses.


What are a few names of viruses?

some viruses are....., tmv ,hiv ,rhinovirus ,rhabdo virus ,paramyxo virus, arbo virus, hepatitis virus,bacteriophage etc.


What can you conclude about the surface proteins of viruses for which effective vaccines exist?

In order to neutralize the virus, the proteins fro the surface of the virus is used. There are more than a single surface glycoprotein in a single virus and the best antigen must be chosen.


Are Bacteria and viruses pokaryotes or eukaryotes?

Bacteria are prokaryotes. Viruses are not living organisms, virus is a virus, that is all.


What is the general shape of viruses?

A virus can have one of two structures. These are: •Helical virus. A helical virus is rod- or thread-shaped. The virus that causes rabies is a helical virus. •Icosahedral virus. An icosahedral virus is spherically shaped. Viruses that cause poliomyelitis and herpes simplex are icosahedral viruses.