An extracellular fibrillar matrix in gastrulating sea urchin embryos☆
[摘要] Finestructuralstudiesoffractureddevelopingseaurchinembryosrevealedtheexistenceofavoluminous,fibrillar,extracellularmatrixcomposedoffinefilaments,twistingfibersandgranulesliningtheblastocoelofmidgastrulaembryos.Glycinedisaggregatedembryosalsoexhibitedthismaterial.Thefibrillarmatrixiscloselyassociatedwiththebasallaminaoftheectodermalcellsoftheembryoandhistochemicalstudiessuggestitiscomposedmostlyofsulfatedglycosaminoglycans.Thepositionofthematrixwithintheblastocoelaswellasitsorganizedassociationwithembryoniccellsurfacesisconsistentwiththehypothesisthatitplaysamajorroleinguidingtheinvaginatingarchenteronduringgastrulation.
[发布日期] [发布机构]
[效力级别] [学科分类] 生物科学（综合）
[关键词] [时效性]
