Matches in SemOpenAlex for { <https://semopenalex.org/work/W2003560864> ?p ?o ?g. }
Showing items 1 to 71 of
71
with 100 items per page.
- W2003560864 endingPage "137" @default.
- W2003560864 startingPage "118" @default.
- W2003560864 abstract "1. The egg of Fasciola hepatica Linn, was used to test three theories of the mode of hatching of trematode eggs. 2. Exposure to light stimulates the miracidium to release an enzyme that digests a substance binding the operculum to the shell; it is a change in this bonding substance that permits the egg to open. 3. The natural “hatching enzyme” acts from within the shell, and it has no effect on the bond when applied to the outer surface of the shell. 4. Solutions of crystalline pepsin and trypsin digest the bonding substance when they are permitted to come in contact with the inner surface of the shell; diastase and hyaluronidase are without effect. That both pepsin and trypsin destroy the bond suggests the substance is a protein and the “hatching enzyme” is proteolytic in function. 5. At the opercular end of the egg cavity and within the vitelline membrane lies a viscous cushion of material in the shape of a concavoconvex lens. A sequence of changes in the cushion serves as a prologue to the hatching process. During this prologue the refractive index of the cushion changes slightly at one or more points, and a few seconds thereafter the material of the cushion expands rather suddenly to twice its original volume. After a brief interval, and then, in rapid succession, the operculum opens with force as if hinged to the shell, the vitelline membrane ruptures, the cushion material flows out of the shell and usually dissipates, and the miracidium promptly follows the cushion material through the narrow opening. 6. Experiments demonstrate that the escape of the miracidium from the opened egg is due primarily to the hypertonicity of the egg contents and only secondarily to the muscular activity of the larva." @default.
- W2003560864 created "2016-06-24" @default.
- W2003560864 creator A5011232803 @default.
- W2003560864 date "1956-03-01" @default.
- W2003560864 modified "2023-10-05" @default.
- W2003560864 title "The mode of hatching of the egg of Fasciola hepatica" @default.
- W2003560864 cites W2048654275 @default.
- W2003560864 cites W2165337446 @default.
- W2003560864 cites W2288446472 @default.
- W2003560864 cites W2340544917 @default.
- W2003560864 doi "https://doi.org/10.1016/0014-4894(56)90009-1" @default.
- W2003560864 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/13317936" @default.
- W2003560864 hasPublicationYear "1956" @default.
- W2003560864 type Work @default.
- W2003560864 sameAs 2003560864 @default.
- W2003560864 citedByCount "52" @default.
- W2003560864 countsByYear W20035608642017 @default.
- W2003560864 countsByYear W20035608642018 @default.
- W2003560864 countsByYear W20035608642020 @default.
- W2003560864 crossrefType "journal-article" @default.
- W2003560864 hasAuthorship W2003560864A5011232803 @default.
- W2003560864 hasConcept C105702510 @default.
- W2003560864 hasConcept C12554922 @default.
- W2003560864 hasConcept C157369684 @default.
- W2003560864 hasConcept C165901193 @default.
- W2003560864 hasConcept C181199279 @default.
- W2003560864 hasConcept C18903297 @default.
- W2003560864 hasConcept C2776742316 @default.
- W2003560864 hasConcept C2777744765 @default.
- W2003560864 hasConcept C2777856171 @default.
- W2003560864 hasConcept C2780340462 @default.
- W2003560864 hasConcept C2780375986 @default.
- W2003560864 hasConcept C55493867 @default.
- W2003560864 hasConcept C86803240 @default.
- W2003560864 hasConcept C90856448 @default.
- W2003560864 hasConceptScore W2003560864C105702510 @default.
- W2003560864 hasConceptScore W2003560864C12554922 @default.
- W2003560864 hasConceptScore W2003560864C157369684 @default.
- W2003560864 hasConceptScore W2003560864C165901193 @default.
- W2003560864 hasConceptScore W2003560864C181199279 @default.
- W2003560864 hasConceptScore W2003560864C18903297 @default.
- W2003560864 hasConceptScore W2003560864C2776742316 @default.
- W2003560864 hasConceptScore W2003560864C2777744765 @default.
- W2003560864 hasConceptScore W2003560864C2777856171 @default.
- W2003560864 hasConceptScore W2003560864C2780340462 @default.
- W2003560864 hasConceptScore W2003560864C2780375986 @default.
- W2003560864 hasConceptScore W2003560864C55493867 @default.
- W2003560864 hasConceptScore W2003560864C86803240 @default.
- W2003560864 hasConceptScore W2003560864C90856448 @default.
- W2003560864 hasIssue "2" @default.
- W2003560864 hasLocation W20035608641 @default.
- W2003560864 hasLocation W20035608642 @default.
- W2003560864 hasOpenAccess W2003560864 @default.
- W2003560864 hasPrimaryLocation W20035608641 @default.
- W2003560864 hasRelatedWork W2023212643 @default.
- W2003560864 hasRelatedWork W2077820532 @default.
- W2003560864 hasRelatedWork W2079072265 @default.
- W2003560864 hasRelatedWork W2329677975 @default.
- W2003560864 hasRelatedWork W2341406299 @default.
- W2003560864 hasRelatedWork W2354073583 @default.
- W2003560864 hasRelatedWork W2409089963 @default.
- W2003560864 hasRelatedWork W2907799124 @default.
- W2003560864 hasRelatedWork W4378834467 @default.
- W2003560864 hasRelatedWork W4382238559 @default.
- W2003560864 hasVolume "5" @default.
- W2003560864 isParatext "false" @default.
- W2003560864 isRetracted "false" @default.
- W2003560864 magId "2003560864" @default.
- W2003560864 workType "article" @default.