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[Biochemical characterization of haemophilus-strains by using the API 20 E- and API 50e-testsystem (author's transl)]. 1981

R Holländer

The commercially available test systems API 20E and API 50E were used to characterize 74 reference strains and clinical isolates of Haemophilus influenzae, H. aegyptius, H. parainfluenza, H. paraphrophilus and H. paraphrohaemolyticus The strains were grown on chocolate agar followed by suspending some colonies colonies in proteose pepton medium, pH 7.6, supplemented with the X- and V-factors. The alkaline suspension was used to inoculate the cups of the test kits. The alkali of the medium did not influence the biochemical reactions of the bacteria and enabled elimination of false positive reactions, particularly with the indicator phenol red. The API-systems proved efficacious for the diagnosis and characterization of the strains as compared with conventional biochemical tests.

UI MeSH Term Description Entries
D003470 Culture Media Any liquid or solid preparation made specifically for the growth, storage, or transport of microorganisms or other types of cells. The variety of media that exist allow for the culturing of specific microorganisms and cell types, such as differential media, selective media, test media, and defined media. Solid media consist of liquid media that have been solidified with an agent such as AGAR or GELATIN. Media, Culture
D004798 Enzymes Biological molecules that possess catalytic activity. They may occur naturally or be synthetically created. Enzymes are usually proteins, however CATALYTIC RNA and CATALYTIC DNA molecules have also been identified. Biocatalyst,Enzyme,Biocatalysts
D006190 Haemophilus A genus of PASTEURELLACEAE that consists of several species occurring in animals and humans. Its organisms are described as gram-negative, facultatively anaerobic, coccobacillus or rod-shaped, and nonmotile. Hemophilus
D006193 Haemophilus influenzae A species of HAEMOPHILUS found on the mucous membranes of humans and a variety of animals. The species is further divided into biotypes I through VIII. Bacterium influenzae,Coccobacillus pfeifferi,Haemophilus meningitidis,Hemophilus influenzae,Influenza-bacillus,Mycobacterium influenzae
D000596 Amino Acids Organic compounds that generally contain an amino (-NH2) and a carboxyl (-COOH) group. Twenty alpha-amino acids are the subunits which are polymerized to form proteins. Amino Acid,Acid, Amino,Acids, Amino
D001431 Bacteriological Techniques Techniques used in studying bacteria. Bacteriologic Technic,Bacteriologic Technics,Bacteriologic Techniques,Bacteriological Technique,Technic, Bacteriological,Technics, Bacteriological,Technique, Bacteriological,Techniques, Bacteriological,Bacteriologic Technique,Bacteriological Technic,Bacteriological Technics,Technic, Bacteriologic,Technics, Bacteriologic,Technique, Bacteriologic,Techniques, Bacteriologic
D050260 Carbohydrate Metabolism Cellular processes in biosynthesis (anabolism) and degradation (catabolism) of CARBOHYDRATES. Metabolism, Carbohydrate

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