somatoblast

somatoblast

[′sō·məd·ə‚blast]
(invertebrate zoology)
An undifferentiated cleavage cell that gives rise to somatic cells in annelids.
The outer cell layer of the nematogen in Dicyemida.
References in periodicals archive ?
For instance, in bivalves and scaphopods the cleavage pattern of the 2d cell, the first somatoblast, completely differs from the cleavage pattern of 2d in gastropods and polyplacophores.