Objective: To detect genetic variations among pathogenic Leptospira isolated from rats using 16 S r RNA gen as chronometer. Methods: This is an observational st
立 Note:The vehiele unit 15 1 000;The engines unit 15 1 000unit/10 oookw. Production And Sales of 7 Major Manufacturers (Jan .to Aug.,1996)(1 000 units)宾训圳 S