title: Clinical chemistry methodology - past and present.
mesh_terms: D001774:Blood Chemical Analysis; D002624:Chemistry, Clinical / Q000266:history; D003124:Colorimetry; D005858:Germany; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008722:Methods; D008832:Microchemistry; D006113:United Kingdom