Low constitutive expression of TnIL-21 was observed in limited tissues of healthy fish including gut, gill and gonad. Stimulation with LPS significantly induced the expression of TnIL-21 in kidney and spleen.

• TnIL-21仅在正常鱼体组织的鳃、肠和性腺中有少量表达，LPS刺激能诱导TnIL-21在头肾和脾脏中表达。