(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.
Wolffian
Definition:
(a.) Discovered, or first described, by Caspar Friedrich Wolff (1733-1794), the founder of modern embryology.
Example Sentences:
(1) This determines that the ureteral orifice enter the urogenital sinus laterally with respect to the Wolffian duct.
(2) Ultrastructural data are given to support the Wolffian nature of the tumor.
(3) Normal male sexual differentiation is the result of a series of individual steps that occur in an orderly fashion: testicular differentiation, müllerian regression, wolffian duct development, differentiation of the urogenital sinus and external genitalia, phallic growth and descent of the testes.
(4) Thus, it appears that PG synthesis plays a role in the testosterone-induced masculine differentiation of the Wolffian duct.
(5) Gamma-GT is histochemically detected from the 15th day of gestation in Wolffian ducts and in 17- to 18-day-old fetuses in newly differentiated epididymal tubules.
(6) The identity between the fetal Wolffian nerve and the nerve of the suspensory ligament (higher pathway) of the adult is discussed.
(7) Mesonephric agenesis was achieved by microsurgical excision of the left Wolffian duct and the underlying intermediate mesoderm of different regions between somites 16 and 23 in chickens after 50-52 h of incubation (stage 14 HH).
(8) By means of purified rabbit anti-adult chicken kidney antibodies two types of antigens have been identified in the mesonephros: one, localised in the cells of the proximal segment of the secretory tubules, the other characteristic of the collecting segments derived from the Wolffian duct.
(9) The phenotype was distinctive in that the habitus was female in character, but partial fusion of the labioscrotal folds, testes, and male wolffian duct structures that terminated in the vagina were present.
(10) This is a case report of a rare tumour of the ovary originally developing from the embryonal vestiges of the Wolffian duct and becoming a pure mesonephrotic carcinoma.
(11) On day 16, the anogenital distance in male started to increase with thickening of Wolffian duct and disappearance of Müllerian duct.
(12) At laparotomy, only rudimentary fallopian tubes and rudimentary wolffian ducts and wolffian body, but no testes, epididymis, uterus or vagina, were found.
(13) The 74K protein does not cause regression of cultured embryonic intestine or Wolffian duct.
(14) (1) We found that the specific deprivation of EGF using anti-EGF serum during the period of masculine differentiation in an organ culture bioassay system resulted in the disintegration of the Wolffian system in a dose-dependent manner.
(15) In 83 per cent of the patients wolffian structures were present and in 20 per cent microscopic evidence of a terminal nubbin of hyalinized, calcified or hemosiderin-containing tissue was noted.
(16) This infrequent genitourinary malformation is due to a developmental abnormality of the wolffian duct early in fetal life.
(17) On day 14 of fetal life in the rat, Müllerian (paramesonephric) duct in both sexes was first observed close to Wolffian (mesonephric) duct.
(18) A 13 year old female presented with ambiguous external genitalia, right inguinal ovotestis, left ovary, apparently normal Mullerian system, and absent Wolffian system.
(19) We propose that this prostatic primary, nonteratomatous Wilms' tumor can arise from persistent, nephrogenic, blastematous rests in the prostate, in relation to the Wolffian duct system.
(20) The male Wolffian duct was also much reduced in diameter at this stage, but began to grow again from the 14 cm stage onward.