#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
  supertype:  entity_that_can_be_or_was_alive (pm)  e.g., an animal, a cell
  subtype:  blastomere  flagellated_cell  Kupffer's_cell  somatic_cell  blastema  zygote  embryonic_cell  akaryocyte  reproductive_cell  gametocyte  polar_body  Leydig_cell  Sertoli_cell  archespore  mother_cell  arthrospore  arthrospore.cell
  part of:  living_thing
  part:  cell_wall__cell_membrane__plasma_membrane  a thin membrane around the cytoplasm of a cell; controls passage of substances in and out of the cell
  part:  energid__protoplast  a biological unit consisting of a nucleus and the body of cytoplasm with which it interacts
  part:  cytoplasm  the protoplasm of a cell excluding the nucleus
     part:  microsome  a tiny granule in the cytoplasm
     part:  Golgi_body__Golgi_apparatus__Golgi_complex__dictyosome  a net-like structure in the cytoplasm of animal cells (especially in those cells that produce secretions)
  part:  cell_nucleus__nucleus__nucleu__karyon  a part of the cell containing DNA and RNA and responsible for growth and reproduction
     part:  nucleolus__nucleolu__nucleole  a small round body of protein in a cell nucleus; nucleoli contain RNA and are involved in protein synthesis
     part:  chromatin  the readily stainable substance of a cell nucleus consisting of DNA and RNA and various proteins
     part:  achromatin  the part of a cell nucleus that is relatively uncolored by stains or dyes
     part:  chromosome  a threadlike body in the cell nucleus that carries the genes in a linear order
        part:  nucleolus_organizer__nucleolusorganizer__nucleolar_organizer__nucleolarorganizer  the particular part of a chromosome that is associated with a nucleolus after nuclear division
        part:  gene  a self-replicating protein molecule that occupies a fixed place on a chromosome; a unit of heredity
        part:  chromatid  one of two identical strands into which a chromosome splits during mitosis
        part:  centromere  a specialized condensed region of a chromosomes that appears during mitosis where the chromatids are held together to form an X shape
  part:  organelle__cell_organ  a specialized part of a cell; analogous to an organ
  part:  vacuole  a tiny cavity filled with fluid in the cytoplasm of a cell

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