title: [A study on the difference factor in computerized infrared difference spectroscopy].
mesh_terms: D037621:Artemisinins; D003201:Computers; D012717:Sesquiterpenes / Q000032:analysis; D013055:Spectrophotometry, Infrared
chemical_list: D037621:Artemisinins; D012717:Sesquiterpenes; C031327:artemisinin