Corona radiata (embryology) 4249362 185807665 2008-01-21T06:01:53Z ImageRemovalBot 4851336 Removing deleted [[:Image:Mature Graffian follicle.jpg|image]] {{Infobox Anatomy | Name = {{PAGENAME}} | Latin = | GraySubject = 3 | GrayPage = 39 | Image = Gray3.png | Caption = Human ovum examined fresh in the liquor folliculi. The [[zona pellucida]] is seen as a thick clear girdle surrounded by the cells of the corona radiata. <BR><BR>The egg itself shows a central granular deutoplasmic area and a peripheral clear layer, and encloses the germinal vesicle, in which is seen the germinal spot. | Image2 =| Caption2 = Histology of the preovulatory follicle | System = | MeshName = | MeshNumber = | }} :''For the structure in [[neuroanatomy]], see [[Corona radiata]].'' The '''corona radiata''' surround an [[ovum]] or unfertilized egg cell, and consist of two or three strata (layers) of follicular cells. They are attached to the outer protective layer of the [[ovum]], the [[zona pellucida]], and their main purpose in many animals is to supply vital proteins to the cell. They appear at [[ovulation]], but may disappear eventually after [[fertilization]]. ==External links== * [http://mcb.berkeley.edu/courses/mcb135e/fertppt/HTML/sld010.htm Image at Berkeley] * {{BUHistology|18404loa}} {{developmental-biology-stub}} {{Female reproductive system}} [[pl:Wieniec promienisty]] [[pt:Coroa radiada]] [[fi:Korona radiata]]