Task: Class Definition Understanding (ontology: Sciences/Biology)

Which of the following definitions best describes 'cerebellar granule cell precursor'?

A. An undifferentiated neural cell that originates from the neuroectoderm and has the capacity both to perpetually self-renew without differentiating and to generate multiple central nervous system neuronal and glial cell types.
B. A cell located in the outermost proliferative zone of the external germinal layer that can differentiate into astroglial cells and granule cells. This cell type is glial fibrillary acidic protein-positive and HNK1-positive.
C. A(n) neuroblast (sensu Vertebrata) that is cycling.
D. Any neuroblast (sensu Vertebrata) that is part of some forebrain.

Answer: A cell located in the outermost proliferative zone of the external germinal layer that can differentiate into astroglial cells and granule cells. This cell type is glial fibrillary acidic protein-positive and HNK1-positive.