Borreliae, Human Relapsing Fever, and Parasite-vector-host Relationships.

INTRODUCTION.................................................................. TAXONOMY ..................................................................... MORPHOLOGY ................................................................. STAINING ...................................................................... BIOCHEMISTRY .... RESISTANCE ................................................................... CULTURE METHODS. . ......................................................... In Vitro..................................................................... In Developing ChickEmbryos. ...................................... Preservation of Borreliae in Rodents.......................................... Preservation of Borreliae in Ticks............................................. RELATIONSHIP OF BORRELIAE TO THEIR INSECT VECTORS..................... Lice......................................................................... Ticks........................................................................ ATTEMPTS TO CLASSIFY BORRELIAE ACCORDING TO SUSCEPTIBLE ANIMALS. "Natural" Reservoirs....................................................... Laboratory Animals.......................................................... PATHOLOGY IN EXPERIMENTAL ANIMALS ..................................... IMMUNOLOGY................................................................... Agglutinins .................................................................. Adhesion Phenomenon ..................................................... Complement Fixation......................................................... Borreliocidal Antibodies..................................................... Immobilizines ................................................................ Cross-Protection Tests........................................................ Relapse Strains and Phase Variation......................................... Reinfection................................................................. Hereditary Immunity........................................................ Interference .................................................................. Therapeutic Sera and Vaccines............................................... PRACTICAL LABORATORY DIAGNOSIS. .. .........................................