#cell_nucleus__nucleus__nucleu__karyon  a part of the cell containing DNA and RNA and responsible for growth and reproduction
  supertype:  #organelle__cell_organ  a specialized part of a cell; analogous to an organ
  subtype:  #pronucleus  the nucleus of the ovum or sperm after fertilization but before they fuse to form the nucleus of the zygote
  substance:  #nucleoplasm
  part:  #nucleolus  #chromatin  #achromatin  #chromosome
  part of:  #cell  the basic structural and functional unit of all organisms; cells may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals
     part of:  #living_thing__organism__being  a living (or once living) entity that has (or can develop) the ability to act or function independently

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