Sequence analysis demonstrates the conservation of fimH and variability of fimA throughout Avian Pathogenic Escherichia coli (APEC) Fréderic Vandemaele, Dominique Vandekerchove, Monita Vereecken, Jef Derijcke, Maryvonne Dho-Moulin and Bruno Maria Goddeeris Vet. Res., 34 2 (2003) 153-163 DOI: 10.1051/vetres:2002062