#chromatin  the readily stainable substance of a cell nucleus consisting of DNA and RNA and various proteins
  supertype:  #body_substance  the substance of the body
  part of:  #cell_nucleus
  subtype:  #sex_chromatin__sexchromatin  chromatin found only in female cells; "the presence or absence of sex chromatin in cells obtained by amniocentesis makes it possible to determine the sex of a fetus"

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