【摘要】 动物免疫系统的发生和发展是一个漫长的过程,是在生物长期进化和适应发展的过程中逐渐形成并不断发展和完善的。无脊椎动物只具有非特异性免疫;脊椎动物在非特异性免疫的基础上形成了强大的特异性免疫;到了人类,免疫系统得到了充分发展,其结构完善、其功能更为强大。更多还原

【Abstract】 Occurrence and development of animal immunity system is a lengthy process, and it is formed and developed and perfected gradually during age-long evolution and adapting development of biology. Invertebrate has only non-special immunity; vertebrate forms powerful special immunity on the basis of non-special immunity; while human immunity system has developed fully, its structure has been perfect and its function has become powerful.更多还原