ANTIGENIC ANALYSIS OF DISSOCIANTS AND SEROLOGICAL TYPES OF PASTEURELLA MULTOCIDA

Pasteurella multocida has been separated into serological types on the basis of a variety of immunological methods by earlier workers. A definite dissociation pattern has also been described. This study presents evidence that two colonial variants of a type 1 strain are qualitatively identical in their antigenic structure but differ quantitatively with regard to one antigen. The data also indicate the similarity of somatic antigens of three type strains though antigenic differences can be demonstrated in the Jennings triangle plate which possibly represent differences in the substances composing the capsule.