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In his letter Brenner described results from his ongoing research with the small nematode earthworm Caenorhabditus elegans, research that fused genetics and embryology and was designed to study how DNA directed the differentiation and development of the ca. 1,000 cells of this simple organism.
Original Repository:
The Wellcome Library for the History and Understanding of Medicine. Francis Harry Compton Crick Papers
Original Repository. Wellcome Library for the History and Understanding of Medicine. Francis Harry Compton Crick Papers. 11646. URL. http://archives.wellcome.ac.uk/