MITOCHONDRIALRelated to the mitochondria. ROLE DESCRIBED: Human progenitor cells with their DNA-containing nucleus color red after division and their mitochondria labeled in green. Human cells with fragmented mitochondria (top) became neurons (top), whereas those with tubular mitochondria (bottom) remained progenitors. Progenitor cells have their DNA-containing nucleus marked with blue while new born neurons are marked [...]