title: [Hemagglutination caused by pile].
mesh_terms: D000818:Animals; D002645:Chickens / Q000276:immunology; D004912:Erythrocytes / Q000276:immunology; D004926:Escherichia coli / Q000166:cytology / Q000276:immunology*; D006384:Hemagglutination; D008854:Microscopy, Electron; D009154:Mutation