title: Random positions and directions is best: lessons from tissue sampling practices of the stereologist.
authors.forename: T M
authors.initials: TM
authors.lastname: Mayhew
mesh_terms: D000818:Animals; D006736:Horses / Q000196:embryology* / Q000254:growth & development*; D007668:Kidney / Q000196:embryology* / Q000254:growth & development*; D008168:Lung / Q000196:embryology* / Q000254:growth & development*; D015983:Selection Bias