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
