Markers
& Receptors - 2
Definition:
Cell markers
are molecules expressed on the surface of normal cells that may act as receptors
(attachment sites) for other molecules or be unique markers that help identify a lineage of cells
Receptors for
antigens:
eAll immune
cells except natural killer cells (NK) have molecular receptors for the recognition of
specific antigens
eExamples of
these molecular receptors include:
ŽT-cell
receptors (TCR=s)
ŽB-cell
receptors (BCR=s)
all are
surface immunoglobulins (sIgs)
ŽCD3 proteins
work in
conjunction with TCR=s
ŽMajor
Histocompatibility Complex molecules
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