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

MYCOBACTERIUM THIS GENUS IS COMPOSED OF. Strictly aerobic, acid-fast rods, does not Stain well (gram stain indeterminant) DNA has high g+c content, unique cell wall, Mycolic acid carbon chain length c60 Relatively slow growth(two groups) A. RAPID GROWERS (Visible colonies in <5 days B SLOW GROWERS (Visible colonies in 5 days)

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

Category Spore- forming: rod, Gram(+)--Clostridium Nonspore- forming: see next slides

Vibrio sp Gram-negative rods Curves or comma shaped Non-spore forming Highly motile-single polar flagella Associated with salt water Oxidase positive

(二)试验内容 1.、自看标本:虫卵(玻片标本) 两种成虫(大体标本) 两种成虫口囊(玻片标本) 2、示教标本:两种成虫交合伞(玻片 标本)

t检验,亦称 student检验( Student'’sttest),主要用于样本含量较小(例如n<30),总体标准差σ未知的正态分布资料。 一、样本均数与总体均数的比较 二、配对资料的比较 三、两样本均数的比较 四、大样本均数比较的u检验 五、正态性检验与两方差齐性检验

第一节均数的抽样误差 第二节t分布与可信区间 第三节t检验 第四节假设检验的步骤及其有关概念

第一节直线回归 第二节直线相关 第三节 Spearman等级相关