| q.d. | quaque die; Once a Day, Every Day; ÇÏ·ç Çѹø, ¸ÅÀÏ |
|---|---|
| PPD | packs per day; paraphenylenediamine; percussion and postural drainage; permanent partial disability;... |
| WNL | Within Normal Limit(?) |
| LD50/30 | a dose that is lethal for 50% of test subjects within 30 days |
| WFL | within function limits |
| WNL | Within Normal Limits |
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| FFWI | fusion from within |
| Day 0 | day as |
| Day 1 | day |
| DAY 1 | day of birth |
| bone within a bone | <radiology> STOP heavy metal, S: sickle cell disease, T: Thorotrast, O: osteopetrosis, P: Paget's disease, heavy metals, hypervitaminosis D (12 Dec 1998) |
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| within | 1. In the inner or interior part of; inside of; not without; as, within doors. "O, unhappy youth! Come not within these doors; within this roof The enemy of all your graces lives." (Shak) "Till this be cured by religion, it is as impossible for a man to be happy that is, pleased and contented within himself as it is for a sick man to be at ease." (Tillotson) 2. In the limits or compass of; not further in length than; as, within five miles; not longer in time than; as, within an hour; not exceeding in quantity; as, expenses kept within one's income. "That he repair should again within a little while." "Within these five hours lived Lord Hastings, Untainted, unexamined, free, at liberty." (Shak) 3. Hence, inside the limits, reach, or influence of; not going outside of; not beyond, overstepping, exceeding, or the like. "Both he and she are still within my power." (Dryden) "Within himself The danger lies, yet lies within his power." (Milton) "Were every action concluded within itself, and drew no consequence after it, we should, undoubtedly, never err in our choice of good." (Locke) Origin: OE. Withinne, withinnen, AS. Wioinnan; wio with, against, toward + innan in, inwardly, within, from in in. See With, In. Source: Websters Dictionary (01 Mar 1998) |
| antigenic variation | The phenomenon of changes in surface antigens in parasitic populations of Trypanosoma and Plasmodium (and some other parasitic protozoa) in order to escape immunological defense mechanisms. at least 100 different surface proteins have been found to appear and disappear during antigenic variation in a clone of trypanosomes. Each antigen is encoded in a separate gene. Antigenic variation is also known to occur in free living Protozoa and certain bacteria. (18 Nov 1997) |
| variation | In genetics, deviation in characters in an individual from those typical of the group to which it belongs, also, deviation in characters of the offspring from those of its parents. (18 Nov 1997) |
| variation (genetics) | The phenotypic differences among individuals in a population. (12 Dec 1998) |
| phase variation | <microbiology> Alteration in the expression of surface antigens by bacteria. For example: Salmonella can express either of two forms of flagellin, H1 and H2, that are coded by different genes. Control of which form is expressed is brought about by inversion of the promoter for the H2 gene, which if functional (noninverted) is associated with the expression of H2 and the production of a repressor of the H1 gene. Inversion occurs about every 1000 bacterial divisions and is under the control of another gene, hin, that is within the invertable sequence. (31 Dec 1997) |
| coefficient of variation | The ratio of the standard deviation to the mean. (05 Mar 2000) |
| contingent negative variation | An increasing negative shift of the cortical electrical potentials associated with an anticipated response to an expected stimulus. It is an electrical event indicative of a state of readiness or expectancy. (12 Dec 1998) |
| somaclonal variation | The variation between individuals in a clone, particularly in plant clones. While the objective is usually to grow clones without variation, somaclonal variation does provide the opportunity to generate new plant types that would be harder or impossible to generate by conventional plant breeding. (14 Nov 1997) |
| isotypic variation | <immunology> Variability of antigens common to all members of a species, for example the five classes of immunoglobulins found in humans. See: idiotype and allotype. (18 Nov 1997) |
| observer variation | The failure by the observer to measure or identify a phenomenon accurately, which results in an error. Sources for this may be due to the observer's missing an abnormality, or to faulty technique resulting in incorrect test measurement, or to misinterpretation of the data. Two varieties are inter-observer variation (the amount observers vary from one another when reporting on the same material) and intra-observer variation (the amount one observer varies between observations when reporting more than once on the same material). (12 Dec 1998) |
| all souls' day | The second day of November; a feast day of the Roman Catholic church, on which supplications are made for the souls of the faithful dead. Source: Websters Dictionary (01 Mar 1998) |
| alternate day strabismus | Periodic convergent strabismus often occurring every 48 hours. Synonym: alternate day strabismus. (05 Mar 2000) |
| child day care centres | Facilities which provide care for pre-school and school-age children. (12 Dec 1998) |
| riley-day syndrome | <radiology> Familial dysautonomia, autosomal recessive, seen in Jewish infants, malfunction of autonomic nervous system, possibly associated with catecholamine release and beta-NGF, hypersecretion of mucous glands, XR resembles cystic fibrosis (12 Dec 1998) |
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