(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.
Mesoblast
Definition:
(n.) The mesoderm.
(n.) The cell nucleus; mesoplast.
Example Sentences:
(1) The most frequent renal tumor in neonates was the mesoblastic nephroma (3 infants).
(2) Mesoblastic nephroma contained fibronectin but no laminin.
(3) The frequency of mesoblastic nephroma (1%), of bilateral tumors (5%), and of incorrect preoperative diagnosis of Wilms' tumor (5%), the toxicities of the various regimens, and other ancillary data are presented and discussed.
(4) Cytologic diagnosis of mesoblastic nephroma is important because the tumor has an excellent prognosis, and unlike Wilms' tumor, requires only surgery.
(5) In later stages, on human embryos of 11 to 16 mm (37 to 44 days of age; Carnegie stages 16 to 18), the mesoblastic anlage of the appendix is more evident, but it is not invaded by the entoblastic cells which come from the caecum on embryos of 12 to 13 mm.
(6) We have only found eight other reports of adult mesoblastic nephroma.
(7) These results support the hypothesis that a temporary block at some stage in the cell cycle causes mesoblasts to acquire the capacity to differentiate into cartilage cells.
(8) Three main groups are described : ectoblastic, mesoblastic and entoblastic phacomatoses.
(9) These unusual tumors were histologically classified as rhabdoid tumors of the kidney (3 cases) and a cellular mesoblastic nephroma (1 case).
(10) Cellular (or atypical) congenital mesoblastic nephroma (CMN) is a potentially aggressive form of the benign classical congenital mesoblastic nephroma.
(11) Patients 1 and 2 presented during infancy with abdominal masses and hypertension due to bilateral multilocular cysts of the kidney with associated hamartomatous pulmonary cysts; patient 2 also had one area of cellular mesoblastic nephroma.
(12) A case of partially cystic atypical or cellular variant of mesoblastic nephroma in a 27-year old woman is reported.
(13) In contrast to primary mesenchyme or mesoblast, which may form epithelial structures, secondary mesenchyme is incapable of doing so.
(14) The histogenetic relationship to congenital mesoblastic nephroma, Wilms tumor and other tumors is discussed.
(15) The histologic appearance is distinctive and characterized by a marked proliferation of spindled mesenchymal cells resembling the classical type of congenital mesoblastic nephroma, encasing discrete nodules of embryonal epithelium similar to the hyperplastic nephrogenic rests (nephroblastomatosis) usually associated with Wilms' tumor.
(16) However, in view of the possibility of recurrence as shown in rare instances by congenital mesoblastic nephroma, another less aggressive lesion in the spectrum of infantile renal neoplasia, regular follow up is recommended.
(17) Germ cell tumors of this type demonstrate a selective overgrowth of yolk sac endoderm associated with extraembryonic mesoblast and arise perferentially in the gonads of young children.
(18) An acidic fibroblast growth factor-like activity was detected in a primary mesoblastic nephroma.
(19) We have only found 7 other reports of adult mesoblastic nephroma.
(20) Specifically, the high incidence (29%) of mesoblastic nephroma in this age group does not justify such an approach.