• Crown-Rump Length
  Crown-Rump Length

  In utero measurement corresponding to the sitting height (crown to rump) of the fetus. Length is considered a more accurate criterion of the age of the fetus than is the weigh...<br/>Year introduced: 1995
  MeSH
• Cross Reactions
  Cross Reactions

  Serological reactions in which an antiserum against one antigen reacts with a non-identical but closely related antigen.<br/>Year introduced: 1972(1969)
  MeSH

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