title: The gastrointestinal transit time in the guinea-pig.
mesh_terms: D000818:Animals; D002857:Chromium / Q000032:analysis; D017608:Chromium Compounds; D005243:Feces / Q000032:analysis; D005769:Gastrointestinal Motility; D006168:Guinea Pigs / Q000502:physiology*; D008297:Male; D010087:Oxides / Q000032:analysis; D013997:Time Factors
chemical_list: D017608:Chromium Compounds; D010087:Oxides; D002857:Chromium; C023600:chromic oxide