[Immunologic and morphologic characteristics of experimental infection with Mycoplasma pneumoniae].

Pathomorphology of experimental M. pneumoniae infection in 3-week-old guinea pigs was characterized by an early cytopathic action of the causative agent on the bronchial and the alveolar epithelium, and also by progressive infiltrative-proliferative changes in the bronchovascular and interstitial tissue of the lungs against the background of morphological reconstruction in the immunogenesis organs. Immunological and histomorphological study of reinfected guinea pigs pointed to the presence of delayed hypersensitivity features in the response cellular-tissue reactions.