Lymphocytes make a different antibody for each pathogens. They have this '
memory' of a pathogen they had previously come in contact with. The person is
An antibody's mode of action varies with different types of antigens. ... a virus,
such as one that causes influenza , it prevents it from entering other body cells. ...
First, the antibodies will coat infectious bacteria and then white blood cells will ....
by using a vaccine that did not contain the specific pathogen for the disea...
leavingbio.net/the human defence system-web-2.htm
The mucous traps pathogens and prevents them from entering the body. ...
Interferons- These are defence proteins that are produced by body cells that are
infected by a virus. They travel to nearby ... Other lymphocytes produce
Skin forms a waterproof barrier that prevents pathogens from entering the body.
... Antibodies can immobilise bacteria, encourage other cells to 'eat' the ...
One B cell can make an antibody for only one type of pathogen - it is thought up
to 8 ... Combine with viruses/toxins to prevent them from invading cells; Attach to
... it out in their faeces during the primary response, potentially infecting others.
Nov 8, 2010 ... Your body has a defence system against pathogens that make you sick. The
second line of defence includes cells, tissues and organs that work ... They give
instructions to other cells by producing signals. ... The suppressor T cells slow
down or turn off the immune system to prevent damage to good cells.
The Immune System has 3 Lines of Defense Against Foreign Pathogens: 1. ...
The body contains millions of different T-cells, each able to respond to one ... The
cytotoxic T cells are capable of recognizing antigens on the surface of infected
body cells. ... a viral antigen from binding to a body cell thereby preventing
Many pathogens use one or more of these strategies to evade the immune
system. ... Individuals who were previously infected with, and hence are immune
to, the old ... with antibodies and T cells produced against the previous variant of
the virus, ..... each requires a different medical approach to prevent or to treat
The activation of different immune functions and the duration and magnitude of
the ... Helper T cells can recognize virus-infected cells and produce a number of
.... Much higher levels of antibody are needed to prevent the spread of viruses
The first step in infection is for the pathogen to colonize the host. .... The
pathogens are not accessible to antibodies (discussed in Chapter 24), and they
are ... niche where it can replicate, and for exiting the infected cell to spread the
infection. ... host cell membrane and to prevent virus particles from fusing with