| LAG | labiogingival; leukocyte antigen group; linguo-axiogingival; lymphangiogram; lymphocyte activation g... |
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| LaG | labiogingival |
| LID | large intraluminal density; late immunoglobulin deficiency; lymphocytic infiltrative disease |
| LL | large lymphocyte; lateral leminiscus; left lateral; left leg; left lower; left lung; lepromatous [in... |
| LLL | left lower [eye]lid; left liver lobe; left lower leg; left lower lobe |
| LID | Levodopa-induced dyskinesia |
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| LID | Lidocaine |
| LAG | Lymphangiography |
| LAG-3 | Lymphocyte activation gene-3 |
| LID | low iodide diet |
| anaphase lag | Slowing or arrest in the normal migration of chromosomes during anaphase, resulting in such chromosomes being excluded from one of the daughter cells. (05 Mar 2000) |
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| homeostatic lag | The interval in a homeostatic process between a change of the trait controlled and the appropriate response, due to afferent, efferent, and central components. The lag may be a pure random variable, e.g., the waiting time of an exponential process or the sum of several such processes taking any value greater than zero but with a mean considerably greater than zero; sometimes it may be deterministic or almost so and with a minimum sharply defined and greater than zero for anatomical reasons. For instance, the partial pressures of oxygen and carbon dioxide are controlled in the lungs but based on afferent information obtained from the carotid body that is already dated because of the circulation time of ten seconds or so between the two sites. (05 Mar 2000) |
| nitrogen lag | The length of time after the ingestion of a given protein before the amount of nitrogen equal to that in the protein has been excreted in the urine. (05 Mar 2000) |
| jet lag | An imbalance of the normal circadian rhythm resulting from subsonic or supersonic travel through a varied number of time zones and leading to fatigue, irritability, and various functional disturbances. (05 Mar 2000) |
| lag | 1. One who lags; that which comes in last. "The lag of all the flock." 2. The fag-end; the rump; hence, the lowest class. "The common lag of people." (Shak) 3. The amount of retardation of anything, as of a valve in a steam engine, in opening or closing. 4. A stave of a cask, drum, etc. <machinery> Especially, one of the narrow boards or staves forming the covering of a cylindrical object, as a boiler, or the cylinder of a carding machine or a steam engine. 5. <zoology> See Graylag. Lag of the tide, the interval by which the time of high water falls behind the mean time, in the first and third quarters of the moon; opposed to priming of the tide, or the acceleration of the time of high water, in the second and fourth quarters; depending on the relative positions of the sun and moon. Lag screw, an iron bolt with a square head, a sharp-edged thread, and a sharp point, adapted for screwing into wood; a screw for fastening lags. Source: Websters Dictionary (01 Mar 1998) |
| lag phase | <cell culture> The initial growth phase of a culture, during which cell number remains relatively constant prior to rapid growth. (09 Oct 1997) |
| Collier's tucked lid sign | <clinical sign> Unilateral or bilateral lid retraction due to midbrain lesion; occurring at any age. See: setting sun sign, Epstein's sign. Synonym: Collier's tucked lid sign. (05 Mar 2000) |
| nose-bridge-lid reflex | Contraction of the orbicularis oculi muscles upon tapping the margin of the orbit, or the bridge or tip of the nose. Synonym: nose-bridge-lid reflex, nose-eye reflex. (05 Mar 2000) |
| upper lid | The superior, larger and more mobile of the two eyelids which covers most of the anterior surface of the eyeball, including the cornea, when closed; a portion of the lacrimal gland and the aponeurosis of the levator palpebrae superioris muscle extend into it, the muscle opening the closed eye and providing additional elevation when the gaze is directed upward. Synonym: palpebra superior, upper lid. (05 Mar 2000) |
| lid | 1. That which covers the opening of a vessel or box, etc.; a movable cover; as, the lid of a chest or trunk. 2. The cover of the eye; an eyelid. "Tears, big tears, gushed from the rough soldier's lid." (Byron) 3. <botany> The cover of the spore cases of mosses. A calyx which separates from the flower, and falls off in a single piece, as in the Australian Eucalypti. The top of an ovary which opens transversely, as in the fruit of the purslane and the tree which yields Brazil nuts. Origin: AS. Hlid, fr. Hlidan (in comp) to cover, shut; akin to OS. Hlidan (in comp), D. Lid, OHG. Hlit, G. Augenlid eyelid, Icel. Hli gate, gateway. Source: Websters Dictionary (01 Mar 1998) |
| lid-closure reaction | A constriction of both pupils when an effort is made to close eyelids forcibly held apart. A variant of the pupil response to near vision. Synonym: Galassi's pupillary phenomenon, Gifford's reflex, lid-closure reaction, orbicularis phenomenon, orbicularis pupillary reflex, Piltz sign, Westphal's pupillary reflex, Westphal-Piltz phenomenon. (05 Mar 2000) |
| lid crutch spectacles | Spectacles with little offsets of metal with smooth edges which engage above the upper eyelid and keep it raised above the pupil in cases of paralytic blepharoptosis. Synonym: Masselon's spectacles. (05 Mar 2000) |
| lid reflex | A contraction of the eyelids when the cornea is lightly touched with a camel-hair pencil. Synonym: lid reflex. Reflection of light from the surface of the cornea. (05 Mar 2000) |
| lower lid | The inferior, smaller and less mobile of the two eyelids; a check ligament from the inferior rectus muscle extends into it, pulling the lid inferiorly when the gaze is directed downward. Synonym: palpebra inferior, lower lid. (05 Mar 2000) |
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