X and V factor Test – Principle, Procedure, Uses and Interpretation
Haemophilus spp are small, pleomorphic, gram-negative bacilli or coccobacilli with random arrangements. A clinically important species of the genus, influenzaeis a fastidious organism which grows best at 35-37°C with ~5% CO2 and in the presence of special accessory growth factors called X and V factors. X factor comprises protoporphyrin IX, also called haemin or other iron-containing porphyrins. …
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