title: The relation of the shape of renal papillae and of collecting duct openings to intrarenal reflux.
mesh_terms: D000367:Age Factors; D001835:Body Weight; D002648:Child; D002675:Child, Preschool; D002921:Cicatrix / Q000209:etiology; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007668:Kidney / Q000033:anatomy & histology* / Q000648:ultrastructure; D007674:Kidney Diseases / Q000209:etiology; D008297:Male; D008854:Microscopy, Electron; D009929:Organ Size; D011704:Pyelonephritis / Q000209:etiology*