Books > Medicine > Clinical & internal medicine > Diseases & disorders > Immunology
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How the Immune System Recognizes Self and Nonself - Immunoreceptors and Their Signaling (Hardcover, 2008 ed.)
Loot Price: R4,608
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How the Immune System Recognizes Self and Nonself - Immunoreceptors and Their Signaling (Hardcover, 2008 ed.)
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How do you discriminate yourself from other people? This question
must sound odd to you since you easily recognize others at a glance
and, without any effort, would not mistake them for yourself.
However, it is not always easy for some people to discriminate
themselves from others. For example, patients with schi- phrenia
often talk with "others" living inside themselves. Thus it is
likely that n- mally your brain actively recognizes and remembers
the information belonging to yourself and discriminates it from the
information provided by others, although you are not conscious of
it. This brain function must have been particularly important for
most animals to protect their lives from enemies and for species to
survive through evolution. Similarly, higher organisms have also
acquired their immune system through evolution that discriminates
nonself pathogens and self-body to protect their lives from
pathogens such as bacteria or viruses. The brain system may
distinguish integrated images of self and nonself created from many
inputs, such as vision, sound, smell, and others. The immune system
recognizes and distinguishes a variety of structural features of
self and nonself components. The latter actually include almost
everything but self: for example, bacteria, viruses, toxins,
pollens, chemicals, transplanted organs, and even tumor cells
derived from self-tissue. To this end the immune system recruits
different kinds of immune cells, such as B and T lymphocytes,
natural killer (NK) cells, dendritic cells, and macrophages.
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