Sterols as a measure of fecal pollution.
D002784:Cholesterol / Q000032:analysis*; D002845:Chromatography; D005243:Feces / Q000032:analysis*; D013261:Sterols / Q000032:analysis*; D014871:Water Microbiology; D014876:Water Pollution
D013261:Sterols; D002784:Cholesterol