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| ECG | Electro-Cardio-Graphy(-Gram); ½ÉÀüµµ = EKG 1. Conducting System Structu... |
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| CDC | calculated date of confinement; cancer diagnosis center; capillary diffusion capacity; cell division... |
| B&E | brisk and equal |
| BL=BS | bilateral equal breath sounds |
| BS=BL | breath sounds equal bilaterally |
| EEOC | Equal Employment Opportunity Commission |
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| cdc | Cell division cycle |
| PCD | Premature centromere division |
| CDC2 | cell division cycle 2 |
| conjoined equal twins | Conjoined twin's in which both members are approximately of the same size, and nearly normal except for the areas of fusion. Synonym: conjoined symmetrical twins. (05 Mar 2000) |
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| equal | 1. Agreeing in quantity, size, quality, degree, value, etc.; having the same magnitude, the same value, the same degree, etc.; applied to number, degree, quantity, and intensity, and to any subject which admits of them; neither inferior nor superior, greater nor less, better nor worse; corresponding; alike; as, equal quantities of land, water, etc.; houses of equal size; persons of equal stature or talents; commodities of equal value. 2. Bearing a suitable relation; of just proportion; having competent power, abilities, or means; adequate; as, he is not equal to the task. "The Scots trusted not their own numbers as equal to fight with the English." (Clarendon) "It is not permitted to me to make my commendations equal to your merit." (Dryden) "Whose voice an equal messenger Conveyed thy meaning mild." (Emerson) 3. Not variable; equable; uniform; even; as, an equal movement. "An equal temper." 4. Evenly balanced; not unduly inclining to either side; characterised by fairness; unbiased; impartial; equitable; just. "Are not my ways equal?" (Ezek. Xviii. 29) "Thee, O Jove, no equal judge I deem." (Spenser) "Nor think it equal to answer deliberate reason with sudden heat and noise." (Milton) 5. Of the same interest or concern; indifferent. "They who are not disposed to receive them may let them alone or reject them; it is equal to me." (Cheyne) 6. Intended for voices of one kind only, either all male or all female; opposed to mixed. 7. <mathematics> Exactly agreeing with respect to quantity. Equal temperament. See Temperament. Synonym: Even, equable, uniform, adequate, proportionate, commensurate, fair, just, equitable. Origin: L. Aequalis, fr. Aequus even, equal; akin to Skr. Ka, and perh. To L. Unus for older oinos one, E. One. Source: Websters Dictionary (01 Mar 1998) |
| equal cleavage | Cleavage producing blastomeres of like size. (05 Mar 2000) |
| anterior primary division | <anatomy, nerve> The larger, anterolaterally-directed major terminal branch (with the dorsal primary ramus) of all 31 pairs of mixed spinal nerves, formed at the intervertebral foramen. Most ventral primary rami, especially those involved in the innervation of the limbs, participate in the formation of the major nerve plexuses (cervical, brachial, and lumbosacral) and lose their identities. Most in the thoracic region, however, remain separate from adjacent rami to become the intercostal and subcostal nerves. Ventral primary rami provide innervation to the anterolateral body wall and trunk. Nomina Anatomica lists ventral primary rami as "rami ventrales" for each group of spinal nerves: 1) cervical (nervorum cervicalium ), 2) thoracic (nervorum thoracicorum ), 3) lumbar (nervorum lumbalium ), 4) sacral (nervorum sacralium )m, and 5) coccygeal (nervi coccygei ). Synonym: ramus ventralis nervi spinalis, anterior primary division. (05 Mar 2000) |
| reduction division | The first cell division in meiosis, the process by which germ cells are formed. A unique event in which the chromosome number is reduced from diploid (46 chromosomes) to haploid (23 chromosomes). Also called first meiotic division or first meiosis. (12 Dec 1998) |
| Remak's nuclear division | <cell biology> An unusual form of nuclear division, in which the nucleus simply constricts, rather like a cell without chromosome condensation or spindle formation. Partitioning of daughter chromosomes is haphazard. Observed in some Protozoa. (18 Nov 1997) |
| cell division | The separation of one cell into two daughter cells, involving both nuclear division (mitosis) and subsequent cytoplasmic division (cytokinesis). (18 Nov 1997) |
| cell division cycle gene | Genes which control the yeast cell cycle. There are around 50 different genes which do this. (09 Oct 1997) |
| cell division cycle mutant | A yeast cell which has cell division cycle genes that have mutated to become sensitive to temperature, at certain temperatures (usually high ones), various parts of the normal yeast cell cycle become abnormal, and in some strains the yeast cell does not survive at all. (09 Oct 1997) |
| cell division phases | The stages which a cell undergoes when dividing. There are four successive phases: prophase, metaphase, anaphase, and telephase. (12 Dec 1998) |
| meiotic division | A specialised form of nuclear division in which there two successive nuclear divisions (meiosis I and II) without any chromosome replication between them. Each division can be divided into 4 phases similar to those of mitosis pro, meta, ana and telophase). Meiosis reduces the starting number of 4n chromosomes in the parent cell to n in each of the 4 daughter cells. Each cell receives only one of each homologous chromosome pair, with the maternal and paternal chromosomes being distributed randomly between the cells. This is vital for the segregation of genes. During the prophase of meiosis I (classically divided into stages: Leptotene, Zygotene, Pachytene, Diplotene and Diakinesis), homologous chromosomes pair to form bivalents, thus allowing crossing over, the physical exchange of chromatid segments. This results in the recombination of genes. Meiosis occurs during the formation of gametes in animals, which are thus haploid and fertilization gives a diploid egg. In plants meiosis leads to the formation of the spore by the sporophyte generation. (18 Nov 1997) |
| cleavage division | The rapid mitotic division of the zygote with decrease in size of individual cells or blastomeres and the formation of a morula. See: cleavage. (05 Mar 2000) |
| mitotic division | <cell biology> A method of indirect division of a cell, consisting of a complex of various processes, by means of which the two daughter nuclei normally receive identical complements of the number of chromosomes characteristic of the somatic cells of the species. Mitosis, the process by which the body grows and replaces cells, is divided into four phases. 1. Prophase: formation of paired chromosomes, disappearance of nuclear membrane, appearance of the achromatic spindle, formation of polar bodies. 2. Metaphase: arrangement of chromosomes in the equatorial plane of the central spindle to form the monaster. Chromosomes separate into exactly similar halves. 3. Anaphase: the two groups of daughter chromosomes separate and move along the fibres of the central spindle, each toward one of the asters, forming the diaster. 4. Telophase: the daughter chromosomes resolve themselves into a reticulum and the daughter nuclei are formed, the cytoplasm divides, forming two complete daughter cells. NOTE: the term mitosis is used interchangeably with cell division, but strictly speaking it refers to nuclear division, whereas cytokinesis refers to division of the cytoplasm. In some cells, as in many fungi and the fertilized eggs of many insects, nuclear division occurs within the cell unaccompanied by division of the cytoplasm and formation of daughter cells. (13 Nov 1997) |
| multiplicative division | Reproduction by simultaneous division of a mother cell into a number of daughter cells. If the process occurs without fertilization of the mother cell, or encystment, the daughter cells are called merozoites; if they develop within a cyst, and usually after fertilization, they are called sporozoites. (05 Mar 2000) |
| conjugate division | The nuclear division of both haploid nuclei in a dikaryon at the same time (in a dikaryon which has two nuclei). The term is relevant to the biology of fungus. (09 Oct 1997) |
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