| accessory receptors |
Proteins on the surface of T lymphocytes that enhance the response of the T-cell receptor to foreign antigens and stimulate signals from the receptor to the cytoplasm. SEE: cell, antigen-presenting; T-cell receptor
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| accessory thymus |
A lobule isolated from the mass of the thymus gland.
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| accelerant |
a catalyst.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| accelerated atrioventricular (AV) junctional r. |
a cardiac rhythm in which increased rhythmicity of the atrioventricular junction causes it to initiate a series of ectopic impulses, usually occurring at a rate of 70 to 130 beats per minute.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| accelerated h. |
progressive hypertension marked by the funduscopic vascular changes of malignant hypertension but without papilledema.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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