What's the difference between ectomere and entomere?
Ectomere
Definition:
(n.) The more transparent cells, which finally become external, in many segmenting ova, as those of mammals.
Example Sentences:
(1) The merogony follows the pattern of ectomeric schizogony.
(2) Strips of ectoderm corresponding to the presumptive branchial arches were delineated, thus defining anteroposterior 'segments' (designated here as 'ectomeres') that coincided with the spatial distribution of neural crest cells arising from the adjacent levels of the neural fold.
(3) In the course of embryonic development, cranial nerves are differentiated in concordance with the development of the metameric facial structure called 'ectomeres'.
(4) Each ectomere parallels the segmentation of the hindbrain called the 'rhombomere', in which pairs of metameric units cooperate to generate the repeating sequence of cranial branchiomotor nerves.
Entomere
Definition:
(n.) The more granular cells, which finally become internal, in many segmenting ova, as those of mammals.