(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.
Embryology
Definition:
(n.) The science which relates to the formation and development of the embryo in animals and plants; a study of the gradual development of the ovum until it reaches the adult stage.
Example Sentences:
(1) In human embryology, however, information on the epicardial formation is still lacking.
(2) Its potential association with midline facial defects as well as an alternative embryological explanation is discussed.
(3) This clearing and staining procedure is thus readily applicable to comparative studies in anatomy, embryology and systematic zoology.
(4) The authors emphasize some embryologic features of the chromaffin tissue as a basis of understanding of both the physiopathologic and clinical aspects of Pheochromocytoma.
(5) The increased knowledge of endocrinology, cytobiology and embryology has also made stock farmers familiar with biotechnology.
(6) The study includes discussions of embryology and anatomy, a thorough literature review, and a detailed statistical analysis of patient data.
(7) An interpretation is given: if the mutated gene(s) has its effect in early embryological stages, affected relatives may have any type of CHD, but if the alteration occurs later, concordance is expected to be found.
(8) Embryological events responsible for this anomaly are briefly discussed.
(9) A new classification based on a theory of developmental arrest is presented which is more consistent with current knowledge of embryologic development and with recent clinical and histopathologic findings.
(10) It is limited to the late phase of embryologic life, and is without the sense of pain.
(11) It is concluded that this association of truncus arteriosus, aortic arch abnormalities and facial anomalies involves first and fourth branchial arch maldevelopment, and indicates embryological insult between the fourth and seventh weeks of gestation.
(12) Congenital cysts in the seminal vesicle represent a rare by illustrative example of embryological malformation.
(13) Review of the embryology, biochemistry and in vitro culture of sympathetic nervous tissue showed a close relationship between it and pigmented cells in other parts of the body which are also derived from neural crest.
(14) These results demonstrate the early appearance of somatostatin receptors in the rat retina with high levels present embryologically followed by a brief decline in the early postnatal period with a return to high levels by synapse formation (P11).
(15) These results are interpreted in relation to the common embryological origin of these two muscles and their innervation.
(16) It should generally not be difficult and clinically feasible to diagnose them and differentiate them against other diseases if one is conversant with the associated special embryological and anatomical features.
(17) The rationale for the operation is based on the pathologic embryology of the deformity.
(18) The simultaneous absence may be explained by a common embryological mesenchymal origin of the anterior cruciate ligament and the menisci.
(19) The embryological development of the foramen lacerum and the pattern of expansion of these primary tumors support the contention that these three categories of tumors arise in the foramen lacerum.
(20) This paper describes the embryology, anatomy, basic pathology and clinical features of the condition with characteristic X-rays showing the patent foramen caecum and outlines the operative repair.