(a.) Destitute, or partially destitute, of light; not receiving, reflecting, or radiating light; wholly or partially black, or of some deep shade of color; not light-colored; as, a dark room; a dark day; dark cloth; dark paint; a dark complexion.
(a.) Not clear to the understanding; not easily seen through; obscure; mysterious; hidden.
(a.) Destitute of knowledge and culture; in moral or intellectual darkness; unrefined; ignorant.
(a.) Evincing black or foul traits of character; vile; wicked; atrocious; as, a dark villain; a dark deed.
(n.) Absence of light; darkness; obscurity; a place where there is little or no light.
(n.) The condition of ignorance; gloom; secrecy.
(n.) A dark shade or dark passage in a painting, engraving, or the like; as, the light and darks are well contrasted.
(v. t.) To darken to obscure.
Example Sentences:
(1) And that, as much as the “on water, operational” considerations, is why we are being kept in the dark.
(2) The first group was reared in complete darkness while the second one was subjected to permanent noise.
(3) In the dark the 6-azidoflavoproteins are quite stable, except for L-lactate oxidase, where spontaneous conversion to the 6-amino-FMN enzyme occurs slowly at pH 7.
(4) Most notably, retroperitoneal lymph nodes in rabbits remained dark blue up to 28 days after hindlimb endolymphatic instillation of liposomal patent blue.
(5) In the dark cortical zone of the nodes (III group) there occur tissue basophils (mast cells), that, together with increasing number of acidophilic granulocytes and appearance of neutrophilic cells, demonstrates that there is an inflammatory reaction in the organ studied as a response to the lymphocytic suspension injected.
(6) Urinalysis revealed a low pH, increased ketones and bilirubin excretion, dark yellowish change in color, the appearance of "leaflet-shaped" crystals and increased red blood cells and epithelial cells in the urinary sediment, increased water intake, decreased specific gravity and decreased sodium, potassium and chloride in the urine.
(7) We were searching for spontaneous and positional nystagmus in 5 positions with open eyes in darkness and with closed eyes.
(8) Previous FTIR measurements have identified several tyrosine residues that change their absorption characteristics between light-adapted BR and dark-adapted BR, or between intermediates K and M [Dollinger, G., Eisenstein, L., Lin, S.-L., Nakanishi, K., Odashima, K., & Termini, J.
(9) Steady state levels of chloroplast mRNA encoding the core PSII polypeptides remain nearly constant in the light or the dark and are not affected by the developmental stage of the plastid.
(10) The second triplet, which was stable in the dark at 4.2 K following illumination, was assigned to the radical pair Donor+I-.
(11) The results indicate that CRALBP X 11-cis-retinol is sufficiently stereoselective in its binding properties to warrant consideration as a component of the mechanism for the generation of 11-cis-retinaldehyde in the dark.
(12) Although the Ca2+-independent mechanism accounts for about two thirds of the total acetylcholine release in the dark, the amount of acetylcholine released in this way is small compared with the release of acetylcholine triggered by stimulation of the retina with light.
(13) The extracellular concentration of GABA is probably high in prolonged darkness, and it is low after prolonged light exposure.
(14) In lettuce, the presence of 2,4-D in the light lowered the concentration of total Hg (or MeHg) required to reduce growth by 50%, about 13 times relative to that in the dark (i.e., it sensitized the cells).
(15) This suggests that many retinal ganglion cells continue to discharge in total darkness for long periods.
(16) In darkness, raising the concentration of K in the fluid of perfusion gives an increase of the efflux of (86)Rb and increasing the extracellular concentration of Ca yields a retention.
(17) Upon illumination, a dark-adapted photosynthetic sample shows time-dependent changes in chlorophyll (Chl) a fluorescence yield, known as the Kautsky phenomenon or the OIDPS transient.
(18) One elderly woman was left alone in the dark for hours unable to find food or drink.
(19) These observations indicated a novel mechanism that in the absence of light-dark schedule, mothers taught the circadian rhythm to the pups as they raised them.
(20) It was observed that the circadian rhythm was disrupted by injections of lithium at the beginning of the light as well as the dark phase of the LD cycle.
Rabbit
Definition:
(n.) Any of the smaller species of the genus Lepus, especially the common European species (Lepus cuniculus), which is often kept as a pet, and has been introduced into many countries. It is remarkably prolific, and has become a pest in some parts of Australia and New Zealand.
Example Sentences:
(1) In addition, intravenous injection of complexes into rabbits showed optimal myocardial images with agents of intermediate lipophilicity.
(2) Trifluoroacetylated rabbit serum albumin was 5 times more reactive with these antibodies and thus more antigenic than the homologous acetylated moiety confirming the importance of the trifluoromethyl moiety as an epitope in the immunogen in vivo.
(3) As the percentage of rabbit feed is very small compared to the bulk of animal feeds, there is a fair chance that rabbit feed will be contaminated with constituents (additives) of batches previously prepared for other animals.
(4) The influence of the hexylsalicylic acid (2) on the pharmacokinetic of the quinine (1), was studied using rabbits.
(5) Myocardial ischaemia was induced in perfused rabbit hearts by ligating the left main coronary artery.
(6) Serially sectioned rabbit foliate taste buds were examined with high voltage electron microscopy (HVEM) and computer-assisted, three-dimensional reconstruction.
(7) The distribution of gelsolin, a calcium-dependent actin-severing and capping protein, in the retina of the developing and adult rabbit was studied.
(8) Consequently, the present data indicate that training-induced changes in the CS-evoked activity of PFCm cells are significantly related to aversively conditioned bradycardia in rabbits.
(9) To identify the NHE-1 protein and to establish its cellular and subcellular localization in the rabbit kidney, we prepared antibodies to a NHE-1 fusion protein.
(10) The 0.1 M phosphate buffer eluant was electrophoretically heterogeneous and did not elicit the production of bactericidal antibodies in rabbits.
(11) Changes in renal renin levels after the administration of glycerol were not significant, although lower renal renin values were consistently found in rabbits with more severe impairment of renal function.
(12) The effect of hypertension, hyperlipidemia, and the combination of both on acute and chronic myocardial ischemia were evaluated in a total of 30 male rabbits.
(13) All of the rabbits immunized with FCA developed sterile subcutaneous abscesses.
(14) The role of adrenergic agents in augmenting proximal tubular salt and water flux, was studied in a preparation of freshly isolated rabbit renal proximal tubular cells in suspension.
(15) Forty-five enteropathogenic (enteropathogenic Escherichia coli-like) strains isolated in commercial rabbit farms were subdivided into four biotypes with the help of six carbohydrate fermentation tests, ornithine decarboxylase tests, and motility tests.
(16) In all immunized rabbits the antisera obtained with the 7 alpha-derivative had a higher affinity and a narrower specificity than the antiserum obtained with the 7 beta-derivative.
(17) Sera from three of these patients gave a precipitin band in gel diffusion tests identical to that produced by a monospecific rabbit anti-E. granulosus antigen 5 serum, when tested against whole hydatid fluid.
(18) Plasma membranes were obtained from a homogeneous population of rabbit red blood cells at different maturation periods.
(19) The hypothesis that experimentally determined survival times of Treponema pallidum in stored donor blood could be related to the number of treponemes initially present in the treponeme-blood mixtures was investigated by inoculating rabbits with three graded doses of treponemes suspended in donor blood and stored at 4 degrees C for various periods of time.
(20) Most notably, retroperitoneal lymph nodes in rabbits remained dark blue up to 28 days after hindlimb endolymphatic instillation of liposomal patent blue.