(n.) The first rudiments of an organism, whether animal or plant
(n.) The young of an animal in the womb, or more specifically, before its parts are developed and it becomes a fetus (see Fetus).
(n.) The germ of the plant, which is inclosed in the seed and which is developed by germination.
(a.) Pertaining to an embryo; rudimentary; undeveloped; as, an embryo bud.
Example Sentences:
(1) It was found that the skeletal muscle enzyme of the chick embryo is independent of the presence of creatine and consequently is another constitutive enzyme like the creatine kinase of the early embryonic chick heart.
(2) Since 1987, it has become possible to obtain immature ova from the living animal and to let them mature, fertilize and develop into embryos capable of transplantation outside the body.
(3) In X-irradiated litters, almost invariably, the incidence of anophthalmia was higher in exencephalic than in nonexencephalic embryos and the ratio of these incidences (relative risk) decreased toward 1 with increasing dose.
(4) The effects of hormonal promotion of T24-ras oncogene-transfected rat embryo fibroblasts (REF) were compared to cotransformation of these cells with adenovirus E1A and ras.
(5) Scatchard analyses of binding data obtained with synaptosomal preparations from 17-day-old embryos revealed two T3 binding sites.
(6) In the stage 24 chick embryo, a paced increase in heart rate reduces stroke volume, presumably by rate-dependent decrease in passive filling.
(7) From the biochemical markers in follicular fluid, cyclic adenosine monophosphate has a distinct predictive value in regard to pregnancy in in vitro fertilization-embryo transfer cycles.
(8) Implantation of the mouse embryo involves the invasion of the secondary trophoblast giant cells of the ectoplacental cone (EPC) into the uterine decidua.
(9) They suggest that an endogenous retinoid could contribute to positional information in the early Xenopus embryo.
(10) A cytogenetic and anatomopathologic study of an embryo of 24 mm crown-rump length showing pure triploidy (69,XXY) is reported.
(11) The in vivo approach consisted of interspecies grafting between quail and chick embryos.
(12) Here we report direct measurements of protein kinase C (PKC) activity in uninduced ectoderm, and in neuroectoderm shortly after induction by the involuting mesoderm, in Xenopus laevis embryos.
(13) Results obtained from cumulative labeling and pulse-labeling and chase experiments with cells from late gastrulae, yolk plug-stage embryos, and neurulae showed that the 30S RNA is an intermediate in rRNA processing and is derived from 40S pre-rRNA and processed to 28S rRNA.
(14) During that time they have repeatedly demonstrated the likely existence of signalling molecules or morphogens that control the pattern of development in the embryo.
(15) Ernst Reissner studied the formation of the inner ear initially using the embryos of fowls, then the embryos of mammals, mainly cows and pigs, and to a less extent the embryos of man.
(16) The objective of this study was to examine the effects of different culture media used for maturation of bovine oocytes on in vitro embryo development following in vitro fertilization.
(17) By 3 d in the chick embryo, the first neurons detected by antibodies to Ng-CAM are located in the ventral neural tube; these precursors of motor neurons emit well-stained fibers to the periphery.
(18) None of the factors tested was found to have a statistically significant effect on embryo yield.
(19) The embryo stages were assessed visually and some were investigated histologically.
(20) Ninety semen specimens were analysed for use in an IVF-embryo transfer (ET) programme.
Mesothelium
Definition:
(n.) Epithelial mesoderm; a layer of cuboidal epithelium cells, formed from a portion of the mesoderm during the differetiation of the germ layers. It constitutes the boundary of the c/lum.
Example Sentences:
(1) Recognition of this deficiency in our knowledge spurred a belated explosion of research that began with an exploration of the fine structure of the mesothelium.
(2) A case of mucous metaplasia of mesothelium in an 80 year old woman is described.
(3) The other main sites of expression are the genital ridge, fetal gonad and mesothelium.
(4) We have previously shown that progesterone receptor (PR) is expressed in the mesothelium of the chick oviduct and ovary and in the smooth muscle cells of the oviduct and the bursa of Fabricius.
(5) We now describe, for the first time, that cells morphologically similar to uterine decidual cells found beneath the peritoneal mesothelium in inguinal hernia and in the cervical mucosa during normal pregnancy and in the mesenchymal tissue of the Fallopian tubes and ovaries at term react with the monoclonal antibody for IGFBP-1 equally to endometrial decidual cells.
(6) Adenomatoid change or squamous metaplasia of the mesothelium occurs in one-third of cases.
(7) Animals had poor early weight gain, and gross necropsy examination revealed intestinal adhesions and a mesothelium that was sclerotically thickened.
(8) They arise from the tissues of the broad ligament, predominantly from mesothelium covering the peritoneum but also from paramesonephric and mesonephric remnants.
(9) The mesothelium is a target of the toxic and carcinogenic effects of asbestos fibers.
(10) The first mesothelial mitoses appeared: in the first series (I) of experiments - in 24 h, in the second series (II) of experiments - 21 h. Further, proliferation of the mesothelium appeared in different parts of the tissue with various intencity and was of wavy character.
(11) Peritoneal mesothelium was exposed for 2-60 min to solutions of horseradish peroxidase by incubation in vitro, or after intraperitoneal injection in vivo.
(12) Rat pleural mesothelium was studied 16 to 22 months after intrapleural inoculation of chrysotile-asbestos.
(13) In the present study, immunohistochemical analysis of normal rabbit, dog, and monkey tissues using monoclonal antibody OC125, revealed that in these animals positive staining for CA125 is found in all tissues that produce this mucin-like glycoprotein in man, i.e., the peritoneal and pleural mesothelium, the different Müllerian-duct-derived epithelia of the female genital tract, and the epithelium of trachea, bronchi, bronchioli, and mucoserous respiratory glands; CA125 was also detected in some ductal and acinar cells of the dog mammary gland.
(14) The study of the morphologic features of mesothelial cells in effusions in experimental asbestos-induced mesotheliomas may contribute to the understanding of the neoplastic transformation of the mesothelium.
(15) 3) Between 9 and 12 days of age U-shaped folds of the bursal mesothelium began to invade the connective tissue of the bursa.
(16) In the absence of a primary tumor elsewhere, we considered this tumor to be primary in the spleen, and it was presumed that the tumor arose either from invaginated capsular mesothelium of the spleen or from heterotopic pancreatic or enteric tissue within the spleen.
(17) Keratin 7 was found to occur in the columnar and glandular epithelium of the lung, cervix, breast, in bile ducts, collecting ducts in the kidney and in mesothelium, but to be absent from gastrointestinal epithelium, hepatocytes, proximal and distal tubules of the kidney and myoepithelium.
(18) When studying total pleural mesothelium films in rats after intrapleural injection of chrysotile the pathological regeneration of the mesothelium is observed.
(19) The fetal tracheal and bronchial epithelium, tracheal glands, and pleural mesothelium were positive for CA 125.
(20) These results indicate that B. fragilis adheres to rat peritoneal mesothelium better than unencapsulated species and suggests that the capsular polysaccharide of B. fragilis plays some role in this increased adherence.