Spirochetes - shaped organisms, which occupies an intermediate position between bacteria and protozoa. Among the spirochaetes there are many pathogenic forms, causing the person spirochetes (see). Spirochetes are long or short spiral. The spirochaetes no cell wall of a membrane. Spirochaete do not form spores, mobile, but do not have flagella; multiply lateral separation. Spirochetes are painted according to the method Romanovsky - Himsi and detected when processing ammonium silver. All spirochetes - strict or facultative anaerobes. Spirochetes are killed after heating at temperature 60 degrees for 30 minutes, sensitive to the action of chemotherapy drugs.