| H and E | hematoxylin and eosin [stain] |
|---|---|
| HE | half-scan with extrapolation; hard exudate; hektoen enteric [agar]; hemagglutinating encephalomyelit... |
| H&E | hematoxylin and eosin [stain]; hemorrhage and exudate; heredity and environment |
| HES | health examination survey; hematoxylin-eosin stain; human embryonic skin; human embryonic spleen; hy... |
| LFB | luxol fast blue [stain] |
| neutral fat | A triester of fatty acids and glycerol (i.e., triacylglycerol). (05 Mar 2000) |
|---|---|
| Streptomyces griseus neutral proteinase | <enzyme> Component of pronase; included in the group of microbial metalloproteinases EC 3.4.24.4 Chemical name: streptomyces griseus protease 3 Registry number: EC 3.4.24.- (26 Jun 1999) |
| neutral lipid storage disease | <syndrome> Congenital ichthyosis, leukocyte vacuoles, and variable involvement of other organ systems. Synonym: neutral lipid storage disease. (05 Mar 2000) |
| neutral mutation | A mutation that has no selective advantage or disadvantage. Considerable controversy surrounds the question of whether such mutations can exist. (18 Nov 1997) |
| neutral occlusion | An arrangement of teeth such that the maxillary and mandibular first permanent molars are in normal anteroposterior relation. Synonym: normal occlusion. Synonym: neutroclusion. (05 Mar 2000) |
| neutral oxide | An oxide that is neither an acid nor a base; e.g., water (hydrogen oxide, H2O). Synonym: indifferent oxide. (05 Mar 2000) |
| neutral point | The point at which a solution is neither acid nor alkaline (pH 7 at 22캜 for aqueous solutions). (05 Mar 2000) |
| neutral protease | <enzyme> Protease that is optimally active at neutral pH: See: proteases. (18 Nov 1997) |
| neutral reaction | PH of 7.00; H+ and OH- ion concentrations equal at 10-7 m at 22캜. Compare: dissociation constant of water. (05 Mar 2000) |
| neutral red | <chemical> 3-amino-7-dimethylamino-2-methylphenazine hydrochloride. A vital dye used as an indicator and biological stain. Various adverse effects have been observed in biological systems. Pharmacological action: dyes, indicators and reagents. Chemical name: 2,8-Phenazinediamine, N8,N8,3-trimethyl-, monohydrochloride (12 Dec 1998) |
| neutral spirits | Spirits distilled from suitable raw materials, are 95% ethanol (v/v) that is, at least 190 proof when distilled. Used for blending with straight whiskey and for making gin, cordials, liqueurs, and vodka. See: alcohol. Proof spirit, dilute alcohol, specific gravity 0.920, containing 49.5% by weight (57.27% by volume) of C2H5OH at 15.56캜. Originally in Great Britain it was the weakest alcohol that would permit ignition of gunpowder moistened with it. British proof spirit has a specific gravity of 0.9198 and contains 49.2% C2H5OH by weight, or 57.1% by volume at the temperature of 10.56캜. (05 Mar 2000) |
| neutral stimulus | When paired with the unconditioned stimulus in simultaneous presentation to an organism, capable of eliciting a given response. (05 Mar 2000) |
| neutral zone | In dentistry, the potential space between the lips and cheeks on one side and the tongue on the other; natural or artificial teeth in this zone are subject to equal and opposite forces from the surrounding musculature. (05 Mar 2000) |
| day neutral plant | <botany> Plants that flower regardless of day length. (09 Oct 1997) |
| lens neutral proteinase | <enzyme> Degrades alpha 2-crystallin; requires ca and mg; cleaves phe-ser bond in bradykinin; similar enzyme found in human lung Registry number: EC 3.4.24.5 Synonym: neutral proteinase 24.5 (26 Jun 1999) |