Stimulation indices of T lymphocyte proliferation in SPF chickens immunized with NDV-CS-NPs, the LaSota live vaccine, or the inactivated NDV vaccine.

Values are presented as mean ± S.D. of five experiments in each group. Values within the same column with the same lower case letter in the superscript are not significantly different (p>0.05; Student’s t-test).The stimulating indices of NDV-CS-NPs oral group and NDV-CS-NPs intranasal group were significantly higher than those of inactivated NDV vaccine intramuscular group, LaSota live vaccine intranasal group and blank CS-NPs oral group (pp所有数值以每组五次独立实验的平均值±标准偏差（S.D.）表示。同一列中上标带有相同小写字母的数值无显著性差异（p>0.05，学生t检验（Student’s t-test））。新城疫病毒-壳聚糖纳米粒（NDV-CS-NPs）口服组及鼻内组的刺激指数显著高于新城疫病毒灭活疫苗肌内注射组、LaSota株活疫苗鼻内接种组以及空白壳聚糖纳米粒口服组（pp