| BOAT | back pain outcome assessment team |
|---|---|
| PBH | pulling boat hands |
| CEA | carcinoembryonic antigen; carotid endarterectomy; cholesterol-esterifying activity; cost-effectivene... |
| e | base of natural logarithms, approximately 2.7182818285; egg transfer; ejection; electric charge; ele... |
| EA | early antigen; educational age; egg albumin; electric affinity; electrical activity; electroacupunct... |
| EA | Egg albumin |
|---|---|
| ELH | Egg laying hormone |
| EPC | Egg phosphatidylcholine |
| EggPC | Egg phosphatidylcholine |
| EP | Egg production |
| boat bug | <zoology> An aquatic hemipterous insect of the genus Notonecta; so called from swimming on its back, which gives it the appearance of a little boat. Synonym: boat fly, boat insect, boatman, and water boatman. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| boat conformation | See: Haworth conformational formulas of cyclic sugars. (05 Mar 2000) |
| boat form | The less stable of two conformations assumed by 6-membered cyclic sugars (pyranoses) or cyclohexane derivatives, as opposed to chair form. See: Haworth conformational formulas of cyclic sugars. (05 Mar 2000) |
| boat-shaped | <botany> See Cymbiform. Source: Websters Dictionary (01 Mar 1998) |
| boat-shaped abdomen | A condition in which the anterior abdominal wall is sunken and presents a concave rather than a convex contour. Synonym: boat-shaped abdomen, navicular abdomen. (05 Mar 2000) |
| boat shell | <zoology> A marine gastropod of the genus Crepidula. The species are numerous. It is so named from its form and interior deck. A marine univalve shell of the genus Cymba. Source: Websters Dictionary (01 Mar 1998) |
| boat-tail | <zoology> A large grackle or blackbird (Quiscalus major), found in the Southern United States. Source: Websters Dictionary (01 Mar 1998) |
| hatch-boat | A vessel whose deck consists almost wholly of movable hatches; used mostly in the fisheries. Source: Websters Dictionary (01 Mar 1998) |
| vitelline layer of egg | <zoology> The membrane, usually of protein fibres, immediately outside the plasmalemma of the ovum and the earlier stages of the developing embryo. Its structure and composition vary in differing animal groups. (18 Nov 1997) |
| centrolecithal egg | An egg in which the yolk is concentrated near the centre of the egg cell, as is the case in many of the insects. (05 Mar 2000) |
| microlecithal egg | An egg containing a small amount of deutoplasm. (05 Mar 2000) |
| mosaic egg | <biology> At one time a distinction was drawn between those organisms in which the egg seemed to have a firmly committed fate map built in and regulating embryos. In the former, after the first cleavage one blastomere was committed to produce one set of tissues, the other blastomere a different set and removal of one blastomere led to the production of an incomplete embryo. This was particularly obvious in mollusc development where one blastomere had the polar lobe material. This early differentiation (or determination) of blastomeres for particular fates was in distinction to regulating embryos in which the removal of one blastomere did not matter, the other blastomere compensating and producing a full set of tissues. The distinction is, however, only based upon the timing of differentiative events and within a few divisions the regulating embryo also becomes a mosaic of determined cells. (18 Nov 1997) |
| primary egg membrane | See: egg membrane. (05 Mar 2000) |
| high-egg-passage vaccine | Living Flury strain rabies virus at the 180th to 190th level egg passage (embryonate eggs), used for vaccination of cattle and cats, low-egg-passage (LEP) vaccine: at the 40th to 50th passage level, containing 103 to 104 mouse LD50; nonpathogenic in dogs but retains some pathogenicity for cattle and cats. (05 Mar 2000) |
| sea egg | <zoology> A sea urchin. Source: Websters Dictionary (01 Mar 1998) |
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