(n.) One who observes, or pays attention to, anything; especially, one engaged in, or trained to habits of, close and exact observation; as, an astronomical observer.
(n.) One who keeps any law, custom, regulation, rite, etc.; one who conforms to anything in practice.
(n.) One who fulfills or performs; as, an observer of his promises.
(n.) A sycophantic follower.
Example Sentences:
(1) The patterns observed were: clusters of granules related to the cell membrane; positive staining localized to portions of the cell membrane, and, less commonly, the whole cell circumference.
(2) However, this deficit was observed only when the sample-place preceded but not when it followed the interpolated visits (second experiment).
(3) In conclusion, in S-rats a glucose-stimulated insulin release is accompanied by an increase in IBF, but this is not observed in P-rats.
(4) The combined immediate and delayed responses to fleas in the dog are as observed by other investigators in man and guinea pigs.
(5) However, when cross-linked to anti-CD4 or anti-CD8 antibodies a markedly enhanced proliferation of the corresponding subpopulation is observed.
(6) Using monoclonal antibodies directed against the plasma membrane of Madin-Darby canine kidney (MDCK) cells, we demonstrated previously that a glycoprotein with an Mr = 23,000 (gp23) had a non-polarized cell surface distribution and was observed on both the apical and basolateral membranes (Ojakian, G. K., Romain, R. E., and Herz, R. E. (1987) Am.
(7) Stimulation is also observed with mixtures of APC expressing DPw3 and APC expressing A1, and likewise, DPw3+ APC become stimulatory when preincubated with supernatants from A1-positive cells.
(8) For this reason, these observations should not be disregarded.
(9) No differences between the two substances were observed with respect to side effects and general tolerability.
(10) The testing of other models and their failure to describe the kinetic observations are discussed.
(11) The extrusion of granules into the intercellular space via exocytosis is frequently observed.
(12) The time of observation varied between 2 and 17 years.
(13) Insensitive variants die more slowly than wild type cells, with 10-20% cell death observed within 24 h after addition of dexamethasone.
(14) The subcellular distribution of sialyltransferase and its product of action, sialic acid, was investigated in the undifferentiated cells of the rat intestinal crypts and compared with the pattern observed in the differentiated cells present in the surface epithelium.
(15) No reaction product was observed in the lamellar areas.
(16) Cyanoacrylate and PDS coatings were not detectable after 6 weeks while PHBA and PLLA coatings were still observed after 48 weeks.
(17) A total of 13 ascertainments of folate sensitive autosomal fragile sites is observed, of which 10q23 fragility appears to be the most frequent.
(18) This new observation offers good possibilities to study the metabolism of tryptophan at the cellular level.
(19) These membrane perturbation effects not observed with bleomycin-iron in the presence of a hydroxyl radical scavenger, dimethyl thiourea, or a chelating agent, desferrioxamine, were correlated with the ability of the complex to generate highly reactive oxygen species.
(20) The fluctuations in [Ca2+]i measured with fura-2 were synchronized among the population of cells observed and were sensitive to extracellular Ca2+ concentration ([Ca2+]o).
Occultation
Definition:
(n.) The hiding of a heavenly body from sight by the intervention of some other of the heavenly bodies; -- applied especially to eclipses of stars and planets by the moon, and to the eclipses of satellites of planets by their primaries.
(n.) Fig.: The state of being occult.
Example Sentences:
(1) Fecal occult blood was positive in 4 patients and fecal leukocytes were positive in one patient.
(2) The present report details an unusual patient with "occult temporal arteritis" who sustained abrupt monocular visual loss and subsequent ipsilateral ophthalmoplegia involving all functions of the oculomotor nerve.
(3) The concept of almost total breast biopsy has great merit in the discovery of occult carcinoma.
(4) Lateral cervical cystic metastases arising from occult thyroid carcinoma and their ultrasonic differentiation from true cysts are discussed.
(5) The procedure may prove useful for detection of occult infections and may provide a new diagnostic approach in fever of unknown origin.
(6) Previous studies suggest that patients who are in clinical remission harbor tumor in multiple occult "sanctuaries."
(7) While occult breast carcinoma was relatively common in our series (two of 17 patients), the ability to detect the tumor with mammography was disappointing (one of two patients).
(8) A clinico-pathological study of 10 cases (including histopathology) indicates that occult cholesteatoma is neither a congenital cholesteatoma nor an epidermoid cyst, originating in the attic through a melaplastic process of middle ear mucosa behind an intact tympanic membrane.
(9) In order to estimate the diagnostic validity of chemical fecal occult blood tests, i.e.
(10) Arm exercise with myocardial scintigraphy may be an effective method of detecting occult ischemia in patients with peripheral vascular disease.
(11) ), the diagnostic significance (occult carcinoma?, parenchymal asymmetry?, benign or malignant microcalcification?)
(12) The importance of recognising occult CO exposure and of treating symptomatic patients promptly cannot be overemphasized.
(13) In contrast to the immunologically-detected fecal occult blood test, the sensitivity and specificity for CR cancers are surprisingly high, the percentage values in using the Shams test having been found to be 100% and 93.1%, respectively (Shamsuddin).
(14) Accordingly, exacerbation of atherogenesis may accompany release of platelet-associated growth factors (or mitogens) occurring in association with occult, repetitive thrombosis and thrombolysis.
(15) It was found that combining faecal occult blood testing with the health check did not reduce attendance at the health check--43.5% of patients attended when the Haemoccult test kit was offered by the nurse at the health check, 43.6% attended when a test kit was included with the invitation to attend the health check and 42.9% attended when the health check invitation was posted on its own.
(16) Gastric antral vascular ectasia ('water melon stomach') is a poorly documented cause of occult upper gastrointestinal blood loss.
(17) Because cavernous malformations are often angiographically occult and do not have a characteristic appearance on computed tomography (CT), they are seldom recognized preoperatively and may be missed if the surgical specimen is not carefully reviewed.
(18) Taken together, these data demonstrate that dental radiography is not efficacious for the purpose of detecting occult lesions.
(19) A forensic autopsy series of 519 women more than 14 years old was studied for prevalence of benign, atypical, and occult malignant breast lesions.
(20) and metoclopramide stimulation have considerable value in identifying hyperprolactinaemic patients with prolactin-secreting adenomas, particularly those which are radiologically occult.