title: Methods for the routine characterisation of isolates of Haemophilus.
abstract: Methods and their evaluation are described for the routine characterisation of Haemophilus spp isolates using a test for dependence on V factor and a test for the conversion of delta-amino-laevulinic acid (ALA) to porphyrin in which the ALA is incorporated into a solid medium. A method is also described whereby the difference in the size of the inhibition zones around discs of ampicillin and of amoxycillin/clavulanate can be used to detect the production of beta-lactamase.
mesh_terms: D000622:Aminolevulinic Acid / Q000378:metabolism; D000658:Amoxicillin / Q000494:pharmacology; D000667:Ampicillin / Q000494:pharmacology; D003470:Culture Media; D006190:Haemophilus / Q000145:classification* / Q000187:drug effects / Q000378:metabolism; D011166:Porphyrins / Q000378:metabolism; D001618:beta-Lactamases / Q000378:metabolism
chemical_list: D003470:Culture Media; D011166:Porphyrins; D000667:Ampicillin; D000658:Amoxicillin; D000622:Aminolevulinic Acid; D001618:beta-Lactamases