Spirochaetes — Treponema, Leptospira & Borrelia
HardMicrobiology · Bacteriology
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Spirochaetes are long, thin, helically coiled, motile Gram-negative bacteria with axial filaments (endoflagella/periplasmic flagella) that produce a characteristic corkscrew/flexion-extension motility. Three medically important genera dominate NEET PG: Treponema (syphilis), Leptospira (Weil's disease), and Borrelia (Lyme disease, relapsing fever). They share the trait of being too thin to be seen on routine Gram stai…
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