What's the difference between amnion and somatopleure?
Amnion
Definition:
(n.) A thin membrane surrounding the embryos of mammals, birds, and reptiles.
Example Sentences:
(1) We also show that proliferation of primary amnion cells is not dependent on a high c-fos expression, suggesting that the function of c-fos is more likely to be associated with other cellular functions in the differentiated amnion cell.
(2) Lactate dehydrogenase activity was higher in the amnion than in the chorion (p less than 0.01).
(3) Significantly more PP12 (P less than 0.001) was released into the medium from decidual explants than from chorion and amnion explants throughout the experimental period of 24 h. When incubated under identical conditions, placental explants released no detectable PP12.
(4) The organisms are transmitted transovarially, diaplacentally, via endometrium, before or after implantation, via amnion or by the semen when ascending through the infectious environment.
(5) EGF alone or in combination with dexamethasone increased lipocortin 1 formation in amnion cells.
(6) Population studies of continuously cultured primary amnion cells from appropriate donors and of HeLa cells have established that the H- cell behaves as a stem cell which commonly divides into a like cell and a differentiated H+ type.
(7) The effect of mEGF on amnion cell PGE2 production was dependent on the time of treatment and the concentration of mEGF used.
(8) The take of the transplanted free skin flap on the hand was proved to be influenced by the degree of immobilization of the hand operated on and the transplanted graft, the efficiency of permanent anesthesia of the humeral plexus of the operated arm and by tissue therapy with the amnion suspension.
(9) In our opinion in case of typical anamnesis the cerclage-operation is to be performed earlier than in the practice up till now, before opening the cervical os, and the infection of the amnion.
(10) Placental HGF was expressed strongly in the villous syncytium, extravillous trophoblast, and amnionic epithelium, and, to a lesser degree in endothelial cells and villous mesenchyme.
(11) We used data from the population-based Metropolitan Atlanta Congenital Defects Program to study the epidemiology of the early amnion rupture spectrum of defects.
(12) Electron microscopy confirmed the disruption of the basement membrane of the amnion by PMA-stimulated PMN.
(13) A concentration-dependent increase in PGE2 production by amnion cells occurred in response to natural purified and recombinant IL-1 preparations.
(14) LLC-MK(2), HeLa, and human embryo skin cells produced moderate amounts of virus, but FL amnion and primary chick embryo fibroblasts supported little virus growth.
(15) Hybridization of polyadenylic-(+)ribonucleic acid extracted from amnion, chorion, decidua parietalis, basal plate, and placental trophoblast with a radiolabeled 48 mer oligonucleotide and a 540 base pair complementary deoxyribonucleic acid probe to human placental lactogen showed the placental trophoblast to be the major source of human placental lactogen and the extravillous chorion and basal plate to be additional minor sources.
(16) Amniotic bands in consequence of early rupture of amnion-membrane was found in a spontaneously aborted gestational sac.
(17) During continuing infusion, following 210 min of iodoinsulin delivery, intact conceptuses (embryo, amnion, and yolk sac), and portions of adjacent decidua, liver, and spleen were excised, rinsed, and frozen in liquid N2 within 2 min.
(18) We employed a sensitive in vitro amnion invasion assay to examine the relationship of the invasive ability of numerous mouse and human tumor cell lines and their variants to their ability to spontaneously or artificially metastasize; we also studied possible enzymatic activities involved in the in vitro invasion process.
(19) (5) In the case of transmission the frequency of cellular infiltration of the amnion and umbilical vein wall is significantly higher than in the cases of normal gestations.
(20) All amnions restrict AFP movement into maternal serum, but some are distinctly more restrictive than others; in such cases, a relatively greater increase in amniotic fluid AFP concentration would likely have to occur from a fetal lesion before being reflected in maternal serum.
Somatopleure
Definition:
(n.) The outer, or parietal, one of the two lamellae into which the vertebrate blastoderm divides on either side of the notochord, and from which the walls of the body and the amnion are developed. See Splanchnopleure.
Example Sentences:
(1) Tendons develop autonomously from somatopleural cells.
(2) The nuclear specificity of 12 day embryonic skeletal muscle cells has been studied in ectopic limbs that developed after implantation of quail limb somatopleural mesoderm into chick hosts.
(3) Major contributors to the outgrowing axon's environment are the lumbosacral (LS) somites which give rise to limb muscle cells and the LS somatopleural mesoderm which gives rise to limb connective tissues.
(4) Undifferentiated limb bud mesenchyme consists of at least two separate, possibly predetermined, populations of progenitor cells, one derived from somitic mesoderm that gives rise exclusively to skeletal muscle and one derived from somatopleural mesoderm that gives rise to the cartilage and connective tissue of the limb.
(5) From its very beginning on, up to its ceasing at the 27-somite stage, the somatopleural proliferation is more active in the caudal part of the prospective limb territory and in the whole area, it appears stronger ventrally than dorsally.
(6) In both species, the primary mesodermal blastema of the forelimb bud derives from a regional proliferation of somatopleural cells under the ectoderm.
(7) The processes of somites which extend in the dorsal part of the limb bud of Anguis embryos are cords of cells with thin lumina; at the stage of the allantoic bud of 0,6 to 0,8 mm long, the distal extremity of these processes dislocate in group of cells which afterwards dissociate, releasing individual somitic cells which are integrated among the mesoblastic somatopleural cells.
(8) During embryogenesis in the chick, the lumbosacral (LS) somatopleure gives rise to the connective tissue and the epidermis of the limb.
(9) At stage (st) 15, prior to its population by muscle cell precursors and the neural crest, the LS somatopleure was shifted anteriorly.
(10) At stage 16, the thickened portion of the epithelium was located in the splanchnopleure; then it moved toward the somatopleure via the coelomic angle; finally, at stage 18, this epithelium occupied the region between coelomic angle and the mesonephros which corresponded to the future genital ridge.
(11) Overall, the results show that somitic cells are the sole source of wing myofibres for, in their absence, somatopleural cells from all mesodermally-derived wing cell types except skeletal myofibres.
(12) By interspecies grafting of somatopleural (ectoderm + mesoderm, e.g.
(13) Thus, avian extra-embryonic somatopleure, both ectoderm and mesoderm, possesses the information for feather development: the extra-embryonic ectoderm, if it is brought in contace with an appendage-forming dermis, is able to respond to the dermal induction by initiating feather morphogenesis; the extra-embryonic mesoderm, if it is experimentally transformed into a dense dermis, can express its feather-forming capacity by specifying feather tract morphology and barb-ridge number, thus leading to the acievement of feather morphogenesis.
(14) Labeling in the ten tissues indicated (1) a tissue-specific spectrum of incorporation of [3H]thymidine, (2) close correlation between frequency and intensity of labeling within a tissue and (3) asymmetrical quantities of incorporation between right and left somatopleure.
(15) In quail embryos of day 2-5, Quox-7 transcripts were found essentially in the ventral mesenchyme (neural crest-derived mesectoderm of the face and hypobranchial structures, somatopleure, and limbs) and also in a narrow dorsomedial band of cells of the superficial ectoderm and neural tube.
(16) Quail-to-chick grafting experiments were performed on 2-day embryos in order to test the differentiating abilities of the somatopleure.
(17) The skeletal musculature of chick limb buds is derived from somitic cells that migrate into the somatopleure of the future limb regions.
(18) We conclude that the somatopleure, and most likely its connective tissue component, contains the information for setting up a specific axon guidance system in the developing limb.
(19) As soon as the 14-somite stage, increased proliferative activities occurring in a limited area of the embryonic somatopleure close to the caudal end of the coelomic cavity point out the onset of limb morphogenesis.
(20) In early stage embryos, Msx-1 was expressed in the somatopleure.