noun

• A blastula having the form of a disc of cells on top of the yolk.

  ‘When the membranes surrounding the peripheral nuclei fuse to form the 6000 cells of the cellular blastoderm, they enclose 175-225 polyploid yolk nuclei within a large syncytial yolk cell.’

  More example sentences

  • ‘As a result, the blastodisc on the yolk becomes a blastoderm.’
  • ‘When the egg is laid, the blastoderm contains several hundred cells.’
  • ‘Pole cells cease dividing after the formation of the cellular blastoderm.’
  • ‘At cellular blastoderm most of the EAR protein is associated with cells at the periphery, while some protein is still associated with yolk nuclei.’