Haemophilus parainfluenzaeHaemophilusHaemophilus influenzaeHaemophilus InfectionsPhosphorus IsotopesAmpicillinHaemophilus ducreyiChromatography, PaperPhospholipasesTransformation, BacterialDNA, BacterialHaemophilus VaccinesPhospholipidsAnti-Bacterial AgentsMeningitis, HaemophilusMicrobial Sensitivity TestsHaemophilus influenzae type bHaemophilus parasuis