Keywords Immune recognition;Superantigen;SED;Straphylococcal enterotoxins;Alanine scanning mutagenisis;Molecular model;Structure superposition;

• 免疫识别;超抗原;SED;金黄色葡萄球菌肠毒素;丙氨酸扫描突变;分子模型;结构叠合;