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Cure
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Unani Herbal
Medicine |
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Cure
with
Unani Herbal
Medicine |
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|
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Cure
with
Unani Herbal
Medicine |
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WHAT
IS AIDS & HIV? |
AIDS
(acquired immuno deficiency syndrome) is
a condition caused by a virus called HIV.
This virus attacks the immune system, the
body's "security force" that fights
off infections. When the immune system breaks
down, you lose this protection and can develop
many serious, often deadly infections and
cancers. HIV is a virus, like the flu or
cold. A virus is really nothing but a set
of instructions for making new viruses,
wrapped up in some fat, protein and sugar.
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Without
living cells, a virus can't do anything
- it's like a brain with no body. In order
to make more viruses (and to do all of the
other nasty things that viruses do), a virus
has to infect a cell. HIV mostly infects
T-cells, other wise called as CD4+ cells,
or T-helper cells. These cells are white
blood cells that turn the immune system
on to fight disease. Once inside the cell,
HIV starts producing millions of viruses,
which eventually kill the cell and then
go out to infect other cells. These viruses
had their RNA in the DNA of the cell, and
then, when the cell tries to make new proteins,
it accidentally makes new viruses as well.
HIV mostly infects cells in the immune system. |
Infection:
Several different kinds of cells have proteins
on their surface that are called CD4 receptors.
HIV searches for cells that have CD4 surface
receptors, because this particular protein
enables the virus to bind to the cell. Although
HIV infects a variety of cells, its main
target is the T4-lymphocyte (also called
the "T-helper cell"), a kind of
white blood cell responsible for warning
your immune system that there are invaders
in the system. |
Replication:
Once HIV binds to a cell, it hides HIV RNA
inside the cell's DNA: this turns the cell
into a sort of HIV factory. |
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