(1) This phenomenon tended to decline in 21 subjects with long-standing diabetes (greater than 1 yr) who taken as a group presented a normal number of RIN rosetting lymphocytes.
(2) Many of the rosetting cells were shown to be typical morphologic hairy cells by light and electron microscopy.
(3) A mixed lymphocyte culture (MLC) utilizing the purified cells as well as unpurified cells and sheep cell rosetted purified cells was performed with the donor.
(4) We have examined the effects of 1,25(OH)2D3 on T-cell populations isolated by buoyant density and E rosetting from human tonsils.
(5) Patient's peripheral blood lymphocytes, sensitised with leprosy antigen, show a low level of rosetting with patients' macrophages.
(6) At each time period, however, in vitro incubation with the thymic factor, thymosin fraction 5, significantly increased the percentage of E-rosetting lymphocytes.
(7) The conditions which lead to autorosette formation are similar to those required for sheep red-cell rosetting.
(8) Falls in the levels of all three types of rosetting lymphocyte were demonstrated over the same period.
(9) In some cases a low percentage of cells staining with anti-HC2 could be significantly increased by depleting T cells from the sample using sheep red blood cell rosetting.
(10) We have studied the occurrence and frequency of rosetting in 75 fresh patient isolates and have identified rosetting strains from Africa, South America, and Asia.
(11) Increased mouse red cell (M) rosetting lymphocytes were demonstrated in the peripheral blood of patients with chronic lymphatic leukaemia.
(12) Cell separation studies revealed that SPA enhancement of the AMLR was not mediated by T-cells, but was mediated by a non-adherent non-E-rosetting fraction of cells.
(13) Over 90 per cent of the thymus cells from each of twenty-six donors were T lymphocytes, identified by E-rosetting and less than 3 per cent of the cells were B lymphocytes identified by EAC-rosetting.
(14) Estimates of mean B lymphocytes plus blood monocytes in the separated suspensions, as measured by EAC rosettes (and peroxidase and differential counts for monocytes) are exceeded by TEAG-rosetting cells in the patients tested.
(15) In contrast, the rosetted cells had significantly lower NK activity, possessed typical lymphocyte morphology and expressed the T-cell-associated marker OKT3.
(16) The isolation scheme consists of incubating peripheral blood mononuclear cells (MNC) on nylon wool, rosetting the nylon wool non-adherent cells with sheep red blood cells (SRBCs) for 1 h at 29 degrees C and then utilizing a 'panning' technique to remove CD3+, non-rosetting cells.
(17) Separation procedures based on rosetting of certain categories of lymphocytes with sheep red cells through an Isopaque-Ficoll gradient indicated that effector cells lacked surface immunoglobulin and generally did not bear Fc receptors.
(18) The rosetting of the same parasites grown in blood group A or B RBC was less sensitive to heparin and was specifically inhibited only by the terminal mono- and trisaccharides of the A and the B blood group antigens, the H disaccharide, and fucose.
(19) PEG also induced autologous E rosetting which otherwise did not take place under the usual conditions.
(20) The percentage of cells possessing Fc receptors was determined by using immunoglobulin-coated (IgM, IgG or IgA) fluorescent microspheres in a multipoint rosetting assay.
Rosette
Definition:
(n.) An imitation of a rose by means of ribbon or other material, -- used as an ornament or a badge.
(n.) An ornament in the form of a rose or roundel, -much used in decoration.
(n.) A red color. See Roset.
(n.) A rose burner. See under Rose.
(n.) Any structure having a flowerlike form; especially, the group of five broad ambulacra on the upper side of the spatangoid and clypeastroid sea urchins. See Illust. of Spicule, and Sand dollar, under Sand.
(n.) A flowerlike color marking; as, the rosettes on the leopard.
Example Sentences:
(1) Most of the radioactivity in spleen cells from these rats were associated with antigen-reactive cells which formed rosettes specifically with HO erythrocytes.
(2) Slide smears revealed the rosette-shaped pattern characteristic of malignant neuroblastoma, many of which were fitted with dendritic plasmatic processes.
(3) The response of Tac rosette positive cells to recombinant IL-2 was always higher than that of the Tac rosette negative or unselected cells, indicating that this rosette method specifically selects T cells expressing IL-2 receptor.
(4) In a second experimental series, immunological tests (Rosette-forming cells, Plaque-forming cells, serum hemagglutinin titers) were performed 7 days after intraperitoneal injection of LPS.
(5) The mouse serum, unlike the rabbit one, induced the inactivation of receptors in rosette forming lymphocytes both in the non-immune and immune mice on the 8th day after the antigenic stimulation.
(6) It contained approximately 1% HP+cells and approximately 3% of all lymphocytes forming rosettes which sheep erythrocytes (E+ cells) present before fractionation.
(7) The suppressor cell is radioresistant; requires 24 hr to suppress optimally; is inactivated by heating at 56 degrees C for 15 min, and is enriched in the non-T interface after SRBC rosette depletion over a discontinuous Ficoll-Hypaque gradient.
(8) Treatment of PBL with the antiserum alone completely inhibited the E-rosette formation.
(9) The increased blastogenesis occurred in rosette-depleted (B cell) populations and did not occur in rosette-enriched (T cell) preparations.
(10) The authors found daily variations in all rosettes in the inner retinal layers, which are of interest here.
(11) Total rosette-forming cells (TRFCs) and percentage of rosette-forming cell (RFC) levels were measured in patients undergoing dialysis and in recipients following renal transplantation.
(12) The proportion of SIg carrying cells within the population forming EA-rosettes was between 11 and 26-4%.
(13) Microautoradiography showed that melanin-containing cells in the trunk and head kidney and in the olfactory rosettes also accumulated high amounts of radioactivity.
(14) In this study, thymic rosettes (TR), which are cell-cell complexes of thymic lymphocytes and stromal cells, were isolated from human thymic tissue, and were characterized.
(15) Incubation of normal pig lymphocytes in serum samples collected from 10 sows immediately before, and at daily intervals after mating with a vasectomized boar significantly elevated the rosette inhibition titre (RIT) of a standard antilymphocyte serum in 6 animals on the first but not on the 2nd and 3rd day after copulation.
(16) Histamine in vitro also inhibited the E-rosette formation, but only in patients with allergic disorders.
(17) Fragments of human erythrocytes inhibited E rosette formation by intact human red cells, but did not result in a significant decrease in rosette formation by intact guinea pig erythrocytes; likewise, guinea pig fragments had no inhibitory effect on rosette formation by human erythrocytes, demonstrating that separate receptors were required for the two red cell types.
(18) With sheep RBC, lymphocytes from 2 of the 5 rabbits studied formed rosettes to the extent of 1.5% in the system containing glutaraldehyde.
(19) Taking the percentage of zymosan-complement complex rosette forming cells (ZC-RFC%) and the number of zymosan-complement Complex rosette forming cells (ZC-RFC) in the peripheral blood as indices of humoral immunity, bone marrow derived lymphocytes were detected by modified Sondra B cell assay in 24 healthy aged taking part in Taichiquan (88 style) exercise and 24 age-matched normal subjects without any physical training.
(20) The rosette inhibition titers (RIT) for sera from 94 women at various stages of gestation were detected with a standardized rosette inhibition test.