The Taxonomy of certain Thiobacilli

Abstract
SUMMARY: The antigenic structure of Haemophilus vaginalis (Gardner & Dukes, Edmunds, and Amies & Jones strains) was compared by means of gel-diffusion preciptin reactions with that of H. influenzae and Corynebacterium cervicis (Laughton). Haemophilus vaginalis (Amies & Jones) was closely related to H. influenzae, and formed a group with related species; H. vaginalis (Gardner & Dukes) and C. cervicis formed separate groups; but all three groups possessed common antigenic components.