blood-thymus barrier

blood-thymus barrier

a sheath of pericytes and epithelial reticular cells around thymic capillaries that prevents the developing T lymphocytes of the cortex of the thymus from being exposed to circulating antigens.

blood-thy·mus bar·ri·er

(blŭd-thī'mŭs bar'ē-ĕr)
A sheath of pericytes and epithelial reticular cells around thymic capillaries that prevents the developing T lymphocytes of the thymus from being exposed to circulating antigens.