常見例句List the main differences between the endotoxin and exotoxin of bacteria. 簡述細(xì)菌內(nèi)毒素和外毒素的主要異同點(diǎn)。The toxin may be formed within the pathogen and released when it dies (endotoxin), or secreted through its cell wall (exotoxin). 在病原體內(nèi)形成,當(dāng)病原體裂解時(shí)被釋放的毒素為內(nèi)毒素;由病原體通過細(xì)胞壁向外分泌的毒素為外毒素。Bacteria can induce apoptosis of the mouse macrophage through its virulent substances such as endotoxin, exotoxin, invasin etc. 細(xì)菌可通過其毒力物質(zhì)如內(nèi)毒素、外毒素、侵襲素等誘導(dǎo)小鼠巨噬細(xì)胞凋亡,是細(xì)菌逃避宿主第一道免疫防御的途徑;Pertussis toxin (PTX) is an exotoxin produced by Bordetella pertussis, known tohave adjuvant properties that induce Th1 responses. 百日咳毒素具有提升Th1細(xì)胞免疫反應(yīng)的生物學(xué)作用,使疾病的低敏感動物品系轉(zhuǎn)變?yōu)榧膊〉拿舾行汀?/li>Objective In order to isolate and purify an exotoxin of Streptococcus mitis which can cause toxic shock syndrome and investigate its pathogenicity. 目的分離與純化致中毒性休克綜合征緩癥鏈球菌外毒素蛋白,并對其致病性進(jìn)行初步研究。These factors include adesins,endotoxin and exotoxins,of which the exotoxins are the major virulence factors,including toxic proteinases,enterexotoxins,hemolysins and siderophore. 該菌的毒力因子主要有外毒素、內(nèi)毒素及黏附素等,其中外毒素是其重要的毒力因子,它包括毒性酶、腸毒素、溶血素和鐵載體等。 返回 exotoxins