medulloblast

noun
me·​dul·​lo·​blast | \mə-ˈdəl-ə-ˌblast, ˈmej-ə-lə- \

Medical Definition of medulloblast 

: a primitive undifferentiated nerve cell of the neural tube that is capable of developing into either a neuroblast or a spongioblast and that is found in medulloblastomas

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