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Concept
C3a
C3a is an anaphylatoxin, a
small protein fragment
formed from the cleavage of
complement component C3
during the
activation of the complement system
, which plays a crucial role in the
immune response
. It functions by binding to
C3a receptors
on
target cells
, leading to
inflammatory responses
, chemotaxis, and the
activation of immune cells
such as
mast cells
and basophils.
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