| Maurer's dots | Finely granular precipitates or irregular cytoplasmic particles that usually occur diffusely in red blood cells infected with the trophozoites of Plasmodium falciparum, occasionally those of P. Malariae; rarely observed in P. Falciparum blood smears because its trophozoites seldom are seen in peripheral blood. Synonym: Maurer's clefts. (05 Mar 2000) |
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| Gunn's dots | Minute, highly glistening, white or yellowish specks usually seen in the posterior part of the fundus; nonpathologic. (05 Mar 2000) |
| Schuffner's dots | Fine, round, uniform red or red-yellow dot's (as coloured with Romanovsky stains) characteristically observed in erythrocytes infected with Plasmodium vivax and P. Ovale, but not ordinarily found in P. Malariae and P. Falciparum infections. Synonym: Schuffner's granules. (05 Mar 2000) |
| Horner-Trantas dots | Evanescent white cellular infiltrates occurring in the bulbar form of vernal keratoconjunctivitis. (05 Mar 2000) |
| Trantas' dots | Pale, grayish red, uneven nodules of gelatinous aspect at the limbal conjunctiva in vernal conjunctivitis. (05 Mar 2000) |
| Ziemann's dots | Fine dot's seen in erythrocytes in malariae malaria. Synonym: Ziemann's stippling. (05 Mar 2000) |
| quantum | <unit> The fundamental unit of electromagnetic energy. (09 Oct 1997) |
| quantum efficiency | The number of photons required for the formation of one oxygen molecule in photosynthesis. Varies from 8-14 depending on the system used to measure it. (18 Nov 1997) |
| quantum evolution | An extremely rapid evolutionarychange in a single genetic lineage, thought to result from a sudden and radical change in the species'environment. (09 Oct 1997) |
| quantum limit | The shortest wavelength found in an X-ray spectrum. (05 Mar 2000) |
| quantum mottle | Mottle caused by the statistical fluctuation of the number of photons absorbed by the intensifying screens to form the light image on the film; faster screens produce more quantum mottle. (05 Mar 2000) |
| quantum rectum | See: Q.R. Origin: L. However much is correct (05 Mar 2000) |
| quantum requirement | The number of quanta of light absorbed required for the transformation of one molecule; the inverse of the quantum yield. (05 Mar 2000) |
| quantum satis | See: q.s. Origin: L. However much is enough Quantum sink, in radiological imaging, the stage at which statistical information reaches its lowest level because of a low photon flux. (05 Mar 2000) |
| quantum speciation | The rapid evolution of a newspecies from a small population that ispartially or totally isolated from the parent population, the rapidspeciation occurs due to geneticdrift and founder effect and usuallyinvolves a few mutations that have a big impact on the organisms' observable physical traits. (09 Oct 1997) |