Serum immunoglobulin titers.

Mice were sensitized and challenged as described in Methods. Serum levels of immunoglobulins were assessed 48 h after the last challenge. Mean values±SEM are given. Il22−/−: C57Bl/6 IL-22 deficient mice, Il22+/+: congenic wild-type control mice. N.D.: not detectable.#pIl22+/+chall and Il22−/− chall.

参照实验方法所述流程，对小鼠实施致敏与攻毒操作。末次攻毒48小时后，检测血清免疫球蛋白水平，结果以平均值±标准误（standard error of the mean, SEM）呈现。
Il22−/−：C57Bl/6背景IL-22缺陷型小鼠；Il22+/+：同基因背景野生型对照小鼠。
N.D.：未检出（not detectable）。
#p：针对Il22+/+攻毒组与Il22−/−攻毒组。