The therapeutic mechanism of YYL was probed by observing the degree of the damage of rats ' colon Mucosa and assessing serum contents of IgA , IgG , IgM and IL - ⅱ .
通过观察结肠粘膜损伤程度，测定血清IgA、IgG、IgM、IL-Ⅱ含量，探讨愈疡液的作用机制。
yyl