Medical Virology Dept. of Medical Microbiology and Parasitology Shanghai Second Medical University Shanghai, China. E.mail:(xkguoshsmu.edu.cn)

Spirochetes Gram negative Long, thin, helical, motile axial filaments locomotion between peptidoglycan layer/outer membrane runs parallel

一、超声多普勒效应 二、超声多普勒系统 三、连续波超声多普勒系统 四、脉冲超声多普勒系统 五、超声成像系统临床运用

Biological Features Structure and chemical composition Developmental cycle Staining properties Antigens Growth and metabolism Characteristics of host-parasite- relationship Classification

Campylobacter Among the most widespread cause of infection in the world Cause both diarrheal and systemic diseases Campylobacter jejuni

General introduction Gram-negative, obligate intracellular coccobacilli bacteria that infect mammals and arthropods Rickettsiae are transmitted in the arthropods, which serves as both vector and reservior Both dna and rna Is sensitive to antibiotic

Biological Features Aerobic, Gram, noncapsulated, rods Gray-black colonies on tellurite亚碲酸盐 medium o Metachromatic granules Chinese-letter morphology in Gram stain

Actinomyces Israelii Anaeslundii a Gram positive sulfur granule; Related to decay tooth and peridentitis

第一节 总体布局 第二节 X线设备布局 掌握X线防护 掌握通风、散射、除湿等

川北医学院：《影像设备管理与维护》课程教学资源（课件讲稿）第一章 绪论（主讲：贺超）