(1) Within the PGE2-protected animals a significant increase was observed in the length of zones of the mucus-producing cells at the surface and in the foveolae (both PAS-positive and alcian-blue-positive cells).
(2) The organisms were seen by light microscopy deep in the gastric foveolae and intracellularly.
(3) The distance of the foveola palatina from the papilla incisiva and palatinal raphe was measured.
(4) At the end of the follow-up period SRNV had disappeared in 83 eyes and extended into the foveola in the remaining 17.
(5) We counted cell bodies in the photoreceptor and ganglion cell layers at 100-microns (0.35 degrees) intervals from the foveola to 1500-microns eccentricity and compared the mean cell counts among each group with RP.
(6) 2) From the 8th week the epithelial surface shows small depressions that become deeper in the mesenchyme making the first bud of the gastric foveolae.
(7) The results of this study demonstrated that: (i) the majority of membranes were closer than 500 microns from the foveola; (ii) the second eye involvement rate in the same patient was 15,79% over 15 months; and (iii) a 37,5% significant visual loss or 41% two lines or greater visual loss was seen after 15 months, which compares favourably with results of laser treatment reported by other institutions.
(8) The ophthalmoscopic changes consisted of initial whitening and subsequent but persistent depigmentation of the foveola.
(9) Of 57 leaking spots, 10 were observed in the foveola, 31 were noted in the fovea and 16 were found in the para- or perifovea.
(10) The morphology of the laser lesion differed from that of the argon lesion in that there is no evidence of thermal coagulation of the inner retina near the foveola.
(11) Pol-alpha-positive epithelial cells were localised at the isthmus of the normal foveola, while Pol-alpha-positive cancer cells were distributed irregularly in the cancer nests.
(12) In the preserved cells of the foveolae, the content of the PAS positive mucosubstances did not change during starvation, and no changes took place in the appearance and in the amount of the mucous granules at the electron microscopic investigation.
(13) Actually, these lesions are mostly situated in perifoveolar area, respecting the foveola, which explains conservation of good vision.
(14) On morphological examination, surface epithelial cells in aged rats (21-24 months) were found to be intact, but the gastric foveolae were shallow and the chief cell layer was thick in aged rats.
(15) With respect to lectin staining, DAS intoxication was characterized by enhanced labelling with LTA and SBA in the surface epithelium and in the foveolae, while WGA binding appeared in the lower mucous neck cells.
(16) Among them 20 are located right behind the foveola, 113 are located in the upper temporal quadrant, 166 in the upper nasal quadrant and 85 in the lower temporal quadrant.
(17) We examined how the numbers and distributions change according to the horizontal eccentricity from the foveola, using toluidine blue stained vertical sections of the human fetal retina (gestational age 32W and 40W).
(18) However, the slope varied substantially with retinal locus, increasing by more than a factor of 2 between the foveola and 35 degrees eccentricity.
(19) The areas measured were a retinal artery and vein, areas of the disk, macula, and retina devoid of visible blood vessels, and the foveola.
(20) "The foveola, in the centre of the fovea [in the retina], which is responsible for really high visual acuity – things like reading – has only 20,000 cones.
Macula
Definition:
(n.) A spot, as on the skin, or on the surface of the sun or of some other luminous orb.
(n.) A rather large spot or blotch of color.
Example Sentences:
(1) (1) Microdissection of an isolated afferent artery with or without macula densa (MD) has revealed that renin release is regulated by NaCl exposure to MD.
(2) The entire macula utricili had disappeared in 10-week specimens.
(3) The auditory function of the sacculus in amphibians is confirmed and special attention is paid to functional heterogeneity of the receptor epithelium in the saccular maculae.
(4) Resorption of soft drusen at the macula in response to laser photocoagulation has been demonstrated previously.
(5) Careful studies have failed to reveal any cause for this excessive permeability response at the macula or any constantly associated medical abnormality.
(6) Morphometric analyses of the macula densa in streptozotocin diabetic rats have revealed, that the volume density of the large lateral intercellular spaces, which are present in normal animals between the macula densa cells, decreases significantly in magnitude from 8.7 to 1.5% in diabetic animals.
(7) Based on experience from 30 patients the usefulness of high resolution B-scan echography and colour Doppler flow imaging for evaluating lesions of the macula is discussed.
(8) Ophthalmoscopic examination disclosed a single, white, elevated mass lesion surrounded by serous retinal detachment located in the upper part of the macula of the right eye.
(9) One hundred thirty-four consecutive eyes with rhegmatogenous retinal detachment involving the macula were evaluated with reference to the effectiveness of systemic steroids in preventing choroidal detachment after scleral buckling surgery and in facilitating both anatomic and functional success.
(10) A directed flow of calcium to developing otoconia from the supporting cells of the maculae is suggested.
(11) We studied sectioned maculae that were obtained from 41 patients with different genetic forms of RP: autosomal dominant (n = 11); X-linked (n = 9); and simplex (n = 21).
(12) Apart from the typical reticular pattern in the macula there were atrophic areas that could have resulted from progression of the dystrophy.
(13) The subjective signs of the syndrome are floating 'moths', photopsias presenting as a 'lateral lightning', sudden appearance of a central macula (central positive scotoma).
(14) Patients with macular lesions and central scotomata had larger amplitudes than patients with normal appearing maculae and no central scotomata.
(15) Examination showed bilateral serous detachment of the macula.
(16) Each hair cell is additionally polarized (III), in that its kinociliary group is inclined toward the plane of the macula surface, forming an angle of 40-60 degrees with it (Figs.
(17) These results demonstrate that the macula densa basement membrane and matrix material between extraglomerular mesangial cells is permeable to high molecular weight molecules and suggest unhindered diffusion of water and solutes within this area.
(18) An in vitro preparation of the saccular nerve, maintained in parallel, served to indicate the potential neural contribution to overall release from the macula.
(19) The cells are bound by maculae adherentes, zonulae occludentes and desmosome-like structures.
(20) In the distal tubule a macula densa segment was found in all nephrons of the reptilian and mammalian type.