What's the difference between epithelioid and epithelium?
Epithelioid
Definition:
(a.) Like epithelium; as, epithelioid cells.
Example Sentences:
(1) Out of the remaining 14 cases six tumours consisted of epithelioid cells, one--spindle-shaped and seven were of mixed structure.
(2) After about 3 weeks of culture, N-ethyl-N-nitrosourea-pretreated fetal rat brain cells showed focal proliferation of neural cells on an underlayer of flat, epithelioid cells.
(3) We present the histological criteria essential for the diagnosis of early Kaposi's sarcoma, its differential diagnosis including epithelioid angiomatosis, as well as the diagnosis of oral hairy leucoplakia.
(4) The existence of smooth muscle cells and modified smooth muscle cells, such as epithelioid cells, cannot be demonstrated.
(5) Three patients with epithelioid haemangioendothelioma (EHE) are described.
(6) The grandular pattern of lysozymal staining was found in epithelioid cells and in giant cells, and the intensity of staining showed a positive correlation with serum lysozyme levels.
(7) Following identification of acinar basement membranes, epithelioid cells were identifiable both in the stroma and in the acinar epithelial cell layer.
(8) In addition, the validity of the classification "mesenchymal-epithelioid" for differentiated decidual cells was addressed using antibodies to the intermediate filament proteins, vimentin, a mesenchymal marker, and keratin, an epithelial marker.
(9) Two patients with epithelioid haemangioendotheliomata of the liver are described.
(10) Cells obtained from non-malignified tissues (diffuse struma) in 83 of 100 cases formed a continuous layer consisting of monomorphous epithelioid cells possessing a high adhesive capacity.
(11) The epithelioid granuloma formation was not observed in (B6 x bm1)F1 nor (bm1 x bm12)F1 recipient mice.
(12) Electronmicroscopically, abundant myofilaments in epithelioid tumor cells were observed.
(13) Epithelioid-cell tumors contained multinucleated cells and areas of cell wrapping more frequently than did spindle-cell tumors.
(14) Mice primed with anti-Id antibody and challenged with ABA-linked beads developed epithelioid granulomas at 72 and 96 hr post-challenge.
(15) The only virus demonstrated was EBV, and this was only in the two epithelioid angiomatosis lesions.
(16) Morphologically a granuloma consists of a focal collection of mononuclear, epithelioid cells, sometimes giant cells, odmixed and surrounding lymphocytes, plasma cells and fibro-blasts.
(17) The ultrastructural characteristics of the tumor cells resembel those of epithelioid cells of experimental human granulomas, as well as those of normal human synovium.
(18) The histologic structure of lymphoid tissue in cases of fatal infection was reviewed, and epithelioid germinal centers, completely devoid of the usual dark zone of rapidly dividing blast cells, were found in 16 infants and children, one of whom also had Reye's syndrome.
(19) Histologic findings from affected nodular skin lesions indicated epithelioid cell granuloma and histiocytic cell infiltrates in the dermis and subcutaneous tissue.
(20) A rare vascular proliferation found as a skin lesion in patients suffering from the acquired immunodeficiency syndrome and sometimes referred to as epithelioid angiomatosis is believed to be a manifestation of infection by the cat scratch bacillus or a related organism.
Epithelium
Definition:
(n.) The superficial layer of cells lining the alimentary canal and all its appendages, all glands and their ducts, blood vessels and lymphatics, serous cavities, etc. It often includes the epidermis (i. e., keratin-producing epithelial cells), and it is sometimes restricted to the alimentary canal, the glands and their appendages, -- the term endothelium being applied to the lining membrane of the blood vessels, lymphatics, and serous cavities.
Example Sentences:
(1) By electrophoresis and scanning densitometry, actin was found to constitute about 4% to 6% of the total cellular protein in the human corneal epithelium.
(2) One hour after direct mechanical cardiomassage (DMCM) a moderately pronounced edema of the intercellular spaces in the basal compartment of the seminiferous epithelium, normal content of lactate and succinate dehydrogenases, and a certain decrease in the activity of glucose-6-phosphate dehydrogenases and NAD- and NADP-diaphorases were noted.
(3) 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.
(4) An inflammatory process than occurs in the airways that is characterized by an influx of eosinophils and neutrophils into the airway epithelium and bronchial fluids.
(5) Data is available to support the early influences of enamel organ epithelium upon a responding mesenchyme in the determination of dental morphogenetic fields (Dryburg, 1967; Miller, 1969).
(6) The epithelium of Brunner's gland stained intensely with Ricinus communis agglutinin-I (RCA-I), succinylated-WGA (S-WGA) and wheat-germ agglutinin (WGA), moderately with Bandeirea simplicifolia agglutinin-I (BS-I), Concanavalia ensiformis agglutinin (Con A) peanut agglutinin (PNA) and Ulex europaeus agglutinin-I (UEA-I) and occasionally with Dolichos biflorus agglutinin (DBA), Lens culinaris agglutinin (LCA) and soybean agglutinin (SBA).
(7) Proliferating cells were abundant and scattered throughout the stratified epithelium before the appearance of villi.
(8) Two lectins, wheat germ agglutinin (WGA) and peanut agglutinin (PNA), were used to compare domains within the interphotoreceptor matrices (IPM) of the cat and monkey, two species where the morphological relationship between the retinal pigment epithelium (RPE) and photoreceptors is distinctly different.
(9) In the kidneys the index of incorporation inthe epithelial cells of the renal cortex was 7.5-fold and in the brain cortex epithelium 15-fold as increased, respectively.
(10) This case is unusual in that it demonstrated no malignant epithelium beyond that of a borderline tumor, but met the criteria of malignancy because of its invasiveness and metastasis.
(11) Volumetric ratio between the thyroid epithelium and colloid did not changed.
(12) Increased amounts of laminin in the basal epithelium of the cornea and of collagen type III in the stroma and subepithelial components of the stroma were observed.
(13) The observed staining indicated that the epithelium of the external auditory meatus has a pattern of keratin expression typical of epidermis in general and the epithelium of the middle ear resembles simple columnar epithelia.
(14) Hexokinase, phoshofructokinase, and aldolase appear to be rate-limiting in normal cervix epithelium; however, since the increase in activity of the first two in cancers was least of all the glycolytic enzymes, redundant enzyme synthesis probably occurs in the malignant cell for the enzymes catalysing reversible reactions.
(15) The ampullar epithelium showed similar changes, but to a lesser extent.
(16) Tunnel-like formations at different depths of the oral epithelium contained higher numbers of bacteria than those seen on the adjacent oral surface.
(17) Luminal and myoepithelial cells have been separated from normal adult human breast epithelium using fluorescence activated cell sorting.
(18) Changes in protein phosphorylation induced by phagocytic challenge were identified in cultured rat retinal pigment epithelium (RPE) following exposure to isolated rat rod outer segments (ROS) or to polystyrene latex microspheres (PSL).
(19) This may be because the epithelium restricts diffusion of the drug or due to the production of a non-prostanoid factor which inhibits smooth muscle responsiveness.
(20) 4 patients (4%) were found to have metaplastic changes of the lining epithelium.