H.parainfluenzae requires factor:: (A) V, (B) VI, (C) VII, (D) X
Answer is A. Ans: (A) V Factor V &X are accessory growth factors which is present in blood- (Ananthanarayan 9th/327)speciesGrowth requirementHemolysis on horse blood agar X V CO2 H influenzae + + - - H aegyptius + + - - H ducreyi + VARIABLE VARIABLE H. parainfluenzae - + - - H. haemolyticus + + - + H. parahaemolyticus - + - + h aphrophilus + - + - H paraphrophilus - + + -