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astroblast

astroblast Anat.
  (ˈæstrəʊblɑːst, -æ-)
  [f. astro- + -blast.]
  A primitive cell that develops into an astrocyte.

1901 in Dorland Med. Dict. (ed. 2). 1940 Gladstone & Wakeley Pineal Organ xxv. 382 Section through the spinal cord of a..chick embryo..b. supportive spongioblast, c. astroblast, or displaced epithelial cells.

Oxford English Dictionary

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