X- and V-FactorsGrow on a plate (Mueller-Hinton agarthat has been fortified with both X.factor (found to be hemin) and V-factor (found to be NAD)+ but not either one aloneThe above plate has been streakedWith enough Haemophilus influenza toform a lawn on the plate. but there isonly growth around the XV filterwhich has been fortified with both Xand V factor (Hemin and NAD)* NAD: Nicotinamide adenine nucleotide, acoenzymeHaemophilus infuenzae fnutritionalfactorsX-hemin Y=WADSHIHEZI UNIVERSITY
X- and V-Factors Grow on a plate (Mueller-Hinton agar) that has been fortified with both X- factor (found to be hemin) and V- factor (found to be NAD) but not either one alone The above plate has been streaked with enough Haemophilus influenza to form a lawn on the plate, but there is only growth around the XV filter, which has been fortified with both X and V factor (Hemin and NAD) * NAD: Nicotinamide adenine nucleotide, a coenzyme SHIHEZI UNIVERSITY
Pathogenesis: Virulent Factor Capsuleantiphagocytic in the absence of specific anticapsularantibodies The polyribose phosphate capsule of type b Hinfluenzae is the major virulence factor The nonencapsulated H influenzae is a regularmember of the normal respiratory flora ofhumansSHIHEZI UNIVERSITY
Pathogenesis: Virulent Factor Capsule antiphagocytic in the absence of specific anticapsular antibodies The polyribose phosphate capsule of type b H influenzae is the major virulence factor The nonencapsulated H influenzae is a regular member of the normal respiratory flora of humans SHIHEZI UNIVERSITY