(n.) A circular structure either in plants or animals; as, a blood disc, a germinal disc, etc. Same as Disk.
Example Sentences:
(1) With this system, a brain region loaded with fura-2 was illuminated by a rotating disc bearing three different interference filters of 340, 360 and 380 nm at a rate of 600 rpm.
(2) Two cases of posterior lumbar vertebral rim fracture and associated disc protrusion in adolescents are presented.
(3) It is suggested that the intercalated disc functioned as a barrier to the freezing process.
(4) The increased release of alkaline phosphatase from the particulate matrix by lysophosphatidylcholine was confirmed by disc electrophoresis.
(5) The correlation of posterior intervertebral (facet) joint tropism (asymmetry), degenerative facet disease, and intervertebral disc disease was reviewed in a retrospective study of magnetic resonance images of the lumbar spine from 100 patients with complaints of low back pain and sciatica.
(6) Patients should be evaluated by perimetry using an appropriate strategy and contrast sensitivity testing, along with careful examination of the optic discs.
(7) Albumin was highly purified from a commercially available rat albumin preparation (Fraction V) using disc electrophoresis.
(8) The intervertebral discs expand centrally and become increasingly convex.
(9) The average repetitive yields and initial coupling of proteins spotted or blotted into PVDF membranes ranged between 84-98% and 30-108% respectively, and were comparable with the yields measured for proteins spotted onto Polybrene-coated glass fiber discs.
(10) The most frequently occurring signs were: tilting of the disc (89%), oblique direction of the vessels (89%) and myopic astigmatism (96%).
(11) Clinical findings and operative results of 212 operated cases of disc protrusion are analyzed in this paper.
(12) The initial effects of chymopapain, a chemonucleolytic agent, on the intervertebral disc of dogs were studied by light and electron microscopic techniques.
(13) Astrocytes nearer the optic disc showed the stellate shape characteristic of mature cells.
(14) Chemonucleolysis is a procedure in which an enzyme is injected into the intervertebral disc for the purpose of alleviating sciatic pain.
(15) Existing visual field defects in three patients were slightly aggravated and in four patients, with a pathological optic disc, visual field loss developed.
(16) Immunohistochemical studies support earlier reports of a rich nerve supply to the posterior longitudinal ligament, a less developed innervation of the anterior ligament and the outermost annular ring, and a total lack of innervation in deeper parts of the intervertebral disc.
(17) We analyzed 80 consecutive cases of lumbar disc herniation who underwent an extraperitoneal anterolateral discectomy according to clinical and radiologic parameters.
(18) The disc-gel patterns of the 8 m urea-soluble proteins showed that C. perfringens caused extensive proteolysis in pig muscle and a lesser extent of proteolysis in rabbit muscle.
(19) The cervical discogenic (painful disc) syndrome consists of scapular pain radiating to the head, shoulder and upper arm, often associated with paraesthesiae but without neurological deficit.
(20) Manganous chloride and Congo red incorporated into blotting paper discs have been used to differentiate gonococci from meningococci.
Sextant
Definition:
(n.) The sixth part of a circle.
(n.) An instrument for measuring angular distances between objects, -- used esp. at sea, for ascertaining the latitude and longitude. It is constructed on the same optical principle as Hadley's quadrant, but usually of metal, with a nicer graduation, telescopic sight, and its arc the sixth, and sometimes the third, part of a circle. See Quadrant.
(n.) The constellation Sextans.
Example Sentences:
(1) Treatment needs were determined by the worst periodontal score per sextant.
(2) Pathologic pockets of 6 mm or more were found in 1.3 and 0.3 sextants in the diabetic and control group subjects, respectively (P less than 0.001).
(3) Neither were any differences found in the periodontal condition related to the duration and control of diabetes, whereas diabetics with advanced retinopathy demonstrated more sextants with deep pockets.
(4) A randomized four-sextant treatment design was used.
(5) The value of digital rectal examination, computerized tomography, magnetic resonance imaging, prostate-specific antigen, transrectal ultrasonography, and systematic-sextant biopsy in the identification of lymph node-positive patients before radical prostatectomy was analyzed in 103 men who had pelvic lymph node dissection, CT had a sensitivity of only 7% and a specificity of 96% in detecting lymph nodes, whereas magnetic resonance imaging had a sensitivity of 50% and a specificity of 100%.
(6) Based on the Community Periodontal Index of Treatment Needs (CPITN) it can be stated that more than 90% of the adult population of 25 years and over needs oral hygiene education and scaling in one of more sextants (TN2).
(7) The mean number of missing sextants was also significantly higher in diabetics.
(8) Very few patients had 'healthy' periodontal sextants at the first visit; the most frequent CPITN category was 3.
(9) Any child with two or more sextants or teeth with CPITN code 3 or one sextant code 4 was taken for a radiographic and full clinical examination.
(10) The mean number of sextants requiring scaling was 0.6 per person at age 17 in Espoo as compared to 4.5 at 18.5 yr of age in Chiangmai.
(11) There are broad differences in the numbers of healthy sextants between developing countries and those which are highly industrialized.
(12) Straight rods, fusiforms and motile rods correlated negatively to the number of healthy sextants per subject.
(13) In general, females were healthier than males, had a significantly greater number of healthy sextants, less sextants with calculus and less sextants with deep pockets.
(14) Posterior sextants with CPITN Code 4 were more likely treated with surgery than sextants with CPITN Code 3.
(15) per sextant in the Spaniard population under 20 years of age.
(16) One maxillary sextant was splinted, while the other was unsplinted.
(17) Four pockets per patient, one in each posterior sextant, were chosen.
(18) Partial mouth random recording (2 upper and 1 lower or 1 upper and 2 lower sextants) was made by CPITN of 150 sextants, and at 6 sites around each tooth in each sextant for each index using a pressure-sensitive probe, with Newman tip and Williams markings, and a WHO 621 tip, probing pressure 0.25 N. Ranges of each index were compared with corresponding CPITN data.
(19) Surgical therapy was effective over all levels of disease severity and was the preferred form of therapy with respect to reduction of probing depth except for sextants exhibiting 4 to 5 mm pockets.
(20) While plaque and calculus were present in many sextants, there was little intense gingivitis and signs of advanced periodontal diseases were rarely present.