FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2187224659> ?p ?o ?g. }

• W2187224659 abstract "an amnion by folding as described for the tree-tailed bat Tadarida hrasiliensis cynocephala (Stephens 1962). Schreiber's long-fingered bat, Miniopterus schreibersii natalensis, is seasonally monoestrous producing a single off­ spring in November. It has a bicornuate uterus with asymmet­ rically sized horns. The right horn is twice the length of the left one. All implantations occur in the right uterine horn, with 90% of the conceptuses originating from the left ovary (Van der Merwe 1986). Implantation is superficial and the blastocyst expands within the uterine horn. Orientation of the point of initial trophoblastic attachment, like the orientation of the embryonic disc, is anti-mesometrial (Van der Merwe 1982). Soon after the endodermic cells have started to delam­ inate from the inner cell mass during the pre-implantation period, a single cavity, the primitive amniotic cavity, devel­ ops between the remainder of the inner cell mass by means of cavitation (Van der Merwe 1980). However, this cavity as well as its roof (composed of cells of the embryonic mass and overlying trophoblast) do not participate in the formation of the definitive amniotic cavity or definitive amnion respec­ tively. At the stage when the trophoblast covering the embry­ onic pole of the blastocyst starts to proliferate to form the invading syncytiotrophohlast, the floor of the primitive amni­ otic cavity flattens off (Van der Merwe 1982). Owing to this action, the roof of the primitive amniotic cavity, as well as the overlying cytotrophoblast, becomes stretched and progres­ sively thinner until it eventually ruptures and disappears. The embryonic disc at this stage is roofed only by the syncytiotro­ phoblast (Van der Merwe 1982). The purpose of the present study was to determine how the pleuramnion in the superficially implanting Schreibers' long-fingered bat is formed. The main aim was to determine whether the cephaliclhead, lateral and caudal folds develop simultaneously and contribute equally to its formation. There has been some controversy as far as this aspect is concerned because, although authors refer to these folds, some do not elaborate on the contribution made by each of these folds dur­ ing amniogenesis. They normally only mention that the free edges of the folds meet dorsally of the embryo. In the pig these circumferential amniotic folds are in reality all directly continuous with each other (Patten 1948). This, indeed, is expected to be the case in the majority of mammals where a pleuramnion exists. In Schreibers' long-fingered bat these folds eventually become continuous, but this occurs only at a later stage of amniogenesis (see below). Twenty Schreiber's long-fingered bats carrying embryos were collected during July and August at Sandspruit Cave No.1 (24'37'S, 27°40'E) in the northern Transvaal bushveld. Following paraffin-wax embedding, all the genital tracts were serially sectioned at 5 11m and the mounted sections stained:with Ehrlich's haematoxylin and counter-stained with eosin. The sections revealed that upgrowing folds from the peri­ meter of the embryonic disc in Schreiber's long-fingered bat, brought with them ectoderm and extra-embryonic mesoderm (Figures la, b). Because this is a double fold of soma top leur a, the outer part comes into close contact with the syncytiotro­ phoblast. As growth of the folds progresses, the outer layer of the folds eventually covers more of the syncytiotrophoblast overlying the embryonic pole. Finally the folds unite dorsally," @default.
• W2187224659 created "2016-06-24" @default.
• W2187224659 creator A5068313078 @default.
• W2187224659 date "1996-01-01" @default.
• W2187224659 modified "2023-09-25" @default.
• W2187224659 title "Amniogenesis in Schreiber’s long-fingered batMiniopterus Schreibersii Natalensis" @default.
• W2187224659 cites W1563492112 @default.
• W2187224659 cites W1973102374 @default.
• W2187224659 cites W2041136033 @default.
• W2187224659 cites W2042807370 @default.
• W2187224659 cites W2111051078 @default.
• W2187224659 cites W2132627877 @default.
• W2187224659 cites W2163640501 @default.
• W2187224659 cites W2562919540 @default.
• W2187224659 doi "https://doi.org/10.1080/02541858.1996.11448406" @default.
• W2187224659 hasPublicationYear "1996" @default.
• W2187224659 type Work @default.
• W2187224659 sameAs 2187224659 @default.
• W2187224659 citedByCount "1" @default.
• W2187224659 crossrefType "journal-article" @default.
• W2187224659 hasAuthorship W2187224659A5068313078 @default.
• W2187224659 hasConcept C105702510 @default.
• W2187224659 hasConcept C159399396 @default.
• W2187224659 hasConcept C172680121 @default.
• W2187224659 hasConcept C196843134 @default.
• W2187224659 hasConcept C2776953305 @default.
• W2187224659 hasConcept C2777495146 @default.
• W2187224659 hasConcept C2778177303 @default.
• W2187224659 hasConcept C2779234561 @default.
• W2187224659 hasConcept C2780646683 @default.
• W2187224659 hasConcept C54355233 @default.
• W2187224659 hasConcept C86803240 @default.
• W2187224659 hasConcept C87073359 @default.
• W2187224659 hasConcept C95444343 @default.
• W2187224659 hasConceptScore W2187224659C105702510 @default.
• W2187224659 hasConceptScore W2187224659C159399396 @default.
• W2187224659 hasConceptScore W2187224659C172680121 @default.
• W2187224659 hasConceptScore W2187224659C196843134 @default.
• W2187224659 hasConceptScore W2187224659C2776953305 @default.
• W2187224659 hasConceptScore W2187224659C2777495146 @default.
• W2187224659 hasConceptScore W2187224659C2778177303 @default.
• W2187224659 hasConceptScore W2187224659C2779234561 @default.
• W2187224659 hasConceptScore W2187224659C2780646683 @default.
• W2187224659 hasConceptScore W2187224659C54355233 @default.
• W2187224659 hasConceptScore W2187224659C86803240 @default.
• W2187224659 hasConceptScore W2187224659C87073359 @default.
• W2187224659 hasConceptScore W2187224659C95444343 @default.
• W2187224659 hasLocation W21872246591 @default.
• W2187224659 hasOpenAccess W2187224659 @default.
• W2187224659 hasPrimaryLocation W21872246591 @default.
• W2187224659 hasRelatedWork W1490199906 @default.
• W2187224659 hasRelatedWork W1600979160 @default.
• W2187224659 hasRelatedWork W1968630248 @default.
• W2187224659 hasRelatedWork W1980022330 @default.
• W2187224659 hasRelatedWork W1980589073 @default.
• W2187224659 hasRelatedWork W1994404689 @default.
• W2187224659 hasRelatedWork W1995955204 @default.
• W2187224659 hasRelatedWork W1996051231 @default.
• W2187224659 hasRelatedWork W2011717606 @default.
• W2187224659 hasRelatedWork W2266623299 @default.
• W2187224659 hasRelatedWork W2328028939 @default.
• W2187224659 hasRelatedWork W2587027196 @default.
• W2187224659 isParatext "false" @default.
• W2187224659 isRetracted "false" @default.
• W2187224659 magId "2187224659" @default.
• W2187224659 workType "article" @default.