| TCR | T-cell reactivity; T-cell receptor; T-cell rosette; thalamocortical relay; total cytoplasmic ribosom... |
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| tm | transport medium; true mean |
| TN | talonavicular; tarsonavicular; team nursing; temperature normal; tenascin; trigeminal nucleus; total... |
| TNF | true negative fraction; tumor necrosis factor |
| TNR | tonic neck reflex; true negative rate |
| stickle-back | <zoology> Any one of numerous species of small fishes of the genus Gasterosteus and allied genera. The back is armed with two or more sharp spines. They inhabit both salt and brackish water, and construct curious nests. Synonym: sticklebag, sharpling, and prickleback. Origin: OE. & Prov E. Stickle a prickle, spine, sting (AS. Sticel) + back. See Stick, and cf. Banstickle. Source: Websters Dictionary (01 Mar 1998) |
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| straight back syndrome | <syndrome> Loss of the normal concavity of the thoracolumbar spine with a narrowed anteroposterior chest dimension, resulting compression of the heart between spine and sternum, and consequent prominent precordial pulsations, an ejection murmur, and radiologic evidence of a widened cardiac silhouette (pancaked heart). (05 Mar 2000) |
| diamond-back | <zoology> The salt-marsh terrapin of the Atlantic coast (Malacoclemmys palustris). Source: Websters Dictionary (01 Mar 1998) |
| double back cross | A mating that is a back cross at each of two loci of interest; of special value and importance in linkage analysis. (05 Mar 2000) |
| topping and back pressure turbine | Turbines which operate at exhaust pressure considerably higher than atmospheric (noncondensing turbines). These turbines are often multistage types with relatively high efficiency. (05 Dec 1998) |
| fold-back elements | A type of transposable element that possesses long inverted repeats, such that when denatured, loops are formed. (05 Mar 2000) |
| low back pain | A continuous pain in the lower back or lumbar region. (12 Dec 1998) |
| abdominal muscles | A large group of muscles in the front of the abdomen that assists in the regular breathing movement and supports the muscles of the spine while lifting and keeping abdominal organs such as the intestines in place. (12 Dec 1998) |
| antagonistic muscles | Those having an opposite function, the contraction of one having the potential, in theory, to "neutralise" that of the other. (05 Mar 2000) |
| anterior cervical intertransversarii muscles | Origin, anterior tubercle of cervical transverse process; insertion, anterior tubercle of next superior transverse process; action, abducts cervical vertebrae; nerve supply, ventral branch of cervical nerves. Synonym: musculi intertransversarii anteriores cervicis, anterior cervical intertransverse muscles. (05 Mar 2000) |
| anterior cervical intertransverse muscles | Origin, anterior tubercle of cervical transverse process; insertion, anterior tubercle of next superior transverse process; action, abducts cervical vertebrae; nerve supply, ventral branch of cervical nerves. Synonym: musculi intertransversarii anteriores cervicis, anterior cervical intertransverse muscles. (05 Mar 2000) |
| antigravity muscles | The muscle's that maintain the posture characteristic of a given animal species. In most mammals they are the extensor muscle's. (05 Mar 2000) |
| aponeurosis of vastus muscles | See: patellar retinaculum, medial patellar retinaculum, lateral patellar retinaculum. (05 Mar 2000) |
| arrector pili muscles | Bundles of smooth muscle fibres, attached to the deep part of the hair follicles, passing outward alongside the sebaceous glands to the papillary layer of the corium; they act to pull the hairs erect, causing "goose bumps" or "goose flesh" (cutis anserina). Synonym: musculi arrectores pilorum, arrectores pilorum, erector muscles of hairs. (05 Mar 2000) |
| branchiomeric muscles | The muscle's derived from branchial arch mesoderm that provide a large portion of the musculature for the face and neck. (05 Mar 2000) |