#organelle__cell_organ  a specialized part of a cell; analogous to an organ
  supertype:  #organ  a fully differentiated structural and functional unit in an animal that is specialized for some particular function
  part of:  #cell
  subtype:  #cilium  hairlike projection from the surface of a cell; provides locomotion in free unicellular organisms
  subtype:  #lysosome  an organelle found in the cytoplasm of most cells (especially in leukocytes and liver and kidney cells)
  subtype:  #cell_nucleus__nucleus__nucleu__karyon  a part of the cell containing DNA and RNA and responsible for growth and reproduction
     subtype:  #pronucleus  the nucleus of the ovum or sperm after fertilization but before they fuse to form the nucleus of the zygote
  subtype:  #nucleolus__nucleolu__nucleole  a small round body of protein in a cell nucleus; nucleoli contain RNA and are involved in protein synthesis
  subtype:  #mitochondrion__chondriosome  an organelle containing enzymes responsible for producing energy
     subtype:  #sarcosome  a large mitochondrion in a striated muscle fiber
  subtype:  #centriole  one of two small cylindrical cell organelles composes of 9 triplet microtubules; form the asters during mitosis
  subtype:  #ribosome  organelle in the cytoplasm of a living cell that is composed of ribonucleic acid; "the ribosome is the site of protein synthesis"

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