Formation of pigment cell patterns in Triturus alpestris embryos
[摘要] ThedistributionofmelanophoresandxanthoporesindevelopingtailbudstagesofTriturusalpestriswasinvestigated.Instage27embryos(curvedtailbuds),melanophoresaredistributedevenlybutsparselyovertheentiredorsolateraltrunk.Withprogressivedevelopmentmelanophoresarrangethemselvesintocompactdorsalandlateralbandspresentinstage34embryos(9to10-mm-longlarvae).Ontheinnersurfaceofdetachedpiecesofskinfromearlytailbudswhichwereinvestigatedinthescanningelectronmicroscopexanthophoreswerediscoveredinadditiontoandmixedwithmelanophores.Unlikemelanophorestheyareinvisiblefromoutside.Laterindevelopmenttheyoccupythezonebetweenthemelanophorebandsandalsothedorsalfin.Thus,formationofpigmentcellpatternsinTriturusembryosisaprocesswhichseemstodependonthedifferentialsortingoutoftwopopulationsofneuralcrest-derivedchromatophorecelltypes.
[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]
