金黄色葡萄球菌StaphvlococcusaureusBigureStaphylococcl金黄色葡萄球Infiltratinggranulocytes (phagocytes)菌感染炎症Coreof pus0(b)(C)Figure18.3Cutaneous lesions of S,aureus.Fundamentally,all are skin abscesses that vary in size, depth, and degree oftissue involvement.(o)Sectional view ofa boil orfununcle,a single pustule that develops in a hairfollicleorgland and is theclassic lesion ofthespecies.The inflamed infection sitebecomes abscessed whenmasses ofphagocytes,bacteria,and fluid arewalledoffbyfibrin(b) A furuncle on the back of the hand.() A carbuncle on the back ofthe neck.Carbuncles are massive deep lesions that result frommultiple, intereonnecting furuneles.Swelling and rupture into the surrounding tissues can be marked
金黄色葡萄球菌 (Staphylococcus aureus) 金黄色葡萄球 菌感染炎症
淋病奈瑟氏球菌(Neisseriagonorrhoeae)Figure18.25Gonococcal ophthalmia neonatorum in a week-oldinfant.Theinfection is marked by intense inflammationand edema; if allowed to progress, it causes damage thatcan lead toblindness.Fortunately,this infection iscompletely preventable and treatable.Figure18.21Thistransmission electronmicrograph of Neisseria (x52,000)cleindicates how the diplococciform
淋病奈瑟氏球菌 (Neisseria gonorrhoeae)
2、杆状(rod)杆菌是细菌中种类最多的一种，工业发酵及食品中常见的细菌大多是杆菌。杆菌的细胞成杆状或圆柱状。同种杆菌细胞的宽度恒定，长度不一，杆菌有长杆状、短杆状、梭状、梭杆状、月梭杆菌亮状、分支状、竹节状之分在排列方短杆菌式上可呈单个、链状、栅状、八字状和丝状。链状棒杆苗竹节状杆苗八宇形栅状长杆菌呼吸营养繁殖结构类型类型
2、杆状（rod) 杆菌是细菌中种类最多的一种，工业发酵及食品中常见的细菌 大多是杆菌
2、杆状(rod)(a)Singlebacillus(b)DiplobacillusStreptobacillus(c(d)Coccobacillus杆状细菌的排列方式常因生长阶段和培养条件而发生变化，一般不作为分类依据
2、杆状（rod) 杆状细菌的排列方式常因生长阶段和培养条件而 发生变化，一般不作为分类依据
杆菌两端：有的钝圆igure20.1ThiselectronmicrographofPseudomonasaenginosa emphasizes itsingle,polarflagellum.地衣芽孢杆菌铜绿假单胞菌（绿脓杆菌）(Pseudomonas aeruginosa)(Bacillus licheniformis)
地衣芽孢杆菌 (Bacillus licheniformis) 铜绿假单胞菌（绿脓杆菌） （Pseudomonas aeruginosa） 杆菌两端：有的钝圆