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.
Farlex Partner Medical Dictionary © Farlex 2012

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.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
The thymus gland's role in cellular immunity and the presence of a blood-thymus barrier typically prevents the parenchyma of the thymus from direct contact with tumor cells or antigens [6].