又称菌毛.用电镜观察某些革兰氏阴性菌及个别革兰氏阳性菌的菌体表面，显现出有比鞭毛细、短、直、硬、数量较多的细丝.直径７—１０微米（μｍ），长０２—２０μｍ，每个M细菌约有１０—５００根.由蛋白质组成，不具运动功能.肠道杆菌的纟散毛有普通纟散毛和性纟散毛两种.具普通纟散毛的细菌能借助纟散毛粘附在多种细胞上，包括人和动物的红细胞和消化道、呼吸道、泌尿道的上皮细胞等.由此获得立足点，进而侵入粘膜，致使机体感染致病.纟散毛也可使许多细菌结合在一起形成菌膜.性纟散毛的长度介于普通纟散毛和鞭毛之间，是由含Ｆ因子的供体菌的Ｆ因子基因编码产生的一种蛋白质突起，出现于细胞表面，有促进供体菌与受体菌接合的功能，其顶端接触于受体菌表面，形成接合桥，供体菌借此直接将遗传物质传递给受体菌.相 关 词 条:相 关 词 条:相 关 词 条:GOOGLE英文翻译:Also known as pili. Using electron microscopy and individuals in certain Gram-negative bacteria Gram-positive bacteria of the bacterial surface, appear to have more than flagella fine, short, straight, hard, a larger number of filaments. Diameter of 7 -10 microns (μm), length 02-20μm, about 10-500 bacteria per M roots. by protein composition, non-motor function. enteric bacilli are common Si Si loose hair loose hair and loose hair of Si two kinds. with average Si bacteria loose hair loose hair with Si adhesion in a variety of cells, including human and animal red blood cells and the digestive tract, respiratory tract, urinary tract epithelial cells and so on. Thus to get a foothold, and then penetrated mucosa, resulting in infection of the body. Si loose hair can also combine a number of bacteria to form biofilm. of Si between the length of the loose hair loose ordinary Si between Mao and flagella is determined by F factor-containing donor strains F factor gene encoding a protein produced by processes, appeared in the cell surface, the donor bacteria can promote bonding with the receptor function of bacteria and its receptor in bacteria on the surface of the top contact to form a conjugation bridge, the donor bacteria to a direct genetic mass transfer to the receptor strain. Related term: Related term: Related term: