Individual #Jan_Swammerdam__Swammerdam  Dutch naturalist and microscopist who proposed a classification of insects and who was among the first to recognize cells in animals and was the first to see red blood cells (1637-1680)
  type:  #naturalist__natural_scientist__naturalscientist  a biologist knowledgeable about natural history (especially botany and zoology)
  type:  #microscopist  a scientist who specializes in research with the use of microscopes

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