title: Ciliostasis as a bioassay: sources of variation and their control.
mesh_terms: D000818:Animals; D001681:Biological Assay; D002923:Cilia / Q000187:drug effects* / Q000502:physiology; D006224:Cricetinae; D005069:Evaluation Studies as Topic; D010947:Plants, Toxic; D012907:Smoking; D013997:Time Factors; D014026:Nicotiana; D014132:Trachea / Q000187:drug effects / Q000502:physiology