sarcoblast

plural sarcoblasts

1. biologyA minute yellowish body present in the interior of certain rhizopods, thouth to play a role in nutrient storage or in the metabolism of the cell.

   There is nothing improbable therefore in the assumption that the entire series in their earliest condition, that is to say when the chitinoid exudation of which the test is entirely composed makes its appearance around the sarcoblast, are identical in form .

   1885 November, Surgeon-Major Wallich, “Critical Observations on Prof. Leidy's "Freshwater Rhizopods of North America," and Classification of the Rhizopods in general”, in Annals & Magazine of Natural History, page 332

2. An embryonic cell that can differentiate into myoblasts.

   These elongated structures were less differentiated than the parent sarcoblast; they did not develop cross-banding as a rule in the short period of cultivation (about 5 days) used by these workers.

   1960, Margaret R. Murray, “Skeletal Muscle tissue in Culture”, in Geoffrey Bourne, editor, The Structure and Function of Muscle V1: Structure, page 114