Chicken il - 15 ( chil - 15 ) , which was discovered in 2001 , plays a main role in activating nk cells and cd8 + memory t cells , and may therefore have potential as a vaccine adjuvant 已有的研究表明,鸡细胞因子在功能活性方面与人类和哺乳动物的细胞因子相似,尤其是il - 2与干扰素( ifn - )均具有较强的免疫增强作用。