#granule  a tiny grain
  supertype:  grain  a small hard particle; "a grain of sand"
  subtype:  microsome  a tiny granule in the cytoplasm
  subtype:  chondrule  small granule (of e.g. chrysolite) found in some meteoric rocks
  subtype:  plastid  any of various small particles in the cytoplasm of the cells of plants and some animals containing pigments or starch or oil or protein
     subtype:  chromoplast  plastid containing pigments other than chlorophyll usually yellow or orange carotenoids
     subtype:  chloroplast  plastid containing chlorophyll and other pigments; in plants that carry out photosynthesis

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