免疫系统,ImmuneSystem,胸腺小叶,30#胸腺,髓质,30#胸腺,胸腺皮质,胸腺小体,30#胸腺,28#淋巴结,28#淋巴结,淋巴小结,副皮质区,髓质,皮质淋巴窦,28#淋巴结,被膜,小梁,小梁,髓索,28#淋巴结髓质,髓窦,小梁,髓索,髓窦,28#淋巴结髓质,淋巴窦,29#脾,29#脾,29#脾白髓,脾小体,动脉周围淋巴鞘,29#脾红髓,脾窦,脾索,小梁,小梁,脾窦,脾索,脾血窦,脾血窦,Questions1.Whatislymphoidtissue?Howmanytypesoflymphoidtissuearethere?Whatdifferencesaretherebetweenthey?2.Describethedifferencesbetweenthelymphnodeandthespleen.3.Describethestructureandfunctionofblood-thymusbarrier.4.Describetherouteandfunctionoflymphocyterecirculation.,
