微生物在生长过程中合成大分子毒性物质,其中有一类是从培养液中制得的,称为“外毒素”(Exotoxin)。另一类是经过菌体自溶、破壁等步骤再提取得到的。以前认为这些毒素是在细胞内,故而称为“内毒素”(Endotoxin)。从后来的研究得知,内毒素是革兰氏阴性细菌 Microbial organisms synthesize macromolecular toxicants during their growth, one of which is derived from a culture medium called “Exotoxin.” The other is through cell autolysis, broken wall and then extract the steps. These toxins were previously thought to be intracellular, hence the name “endotoxin.” From the later study that endotoxin is Gram-negative bacteria