1. Immunologically privileged sites;Barker;Adv. Immunol.,1977
2. Drainage of cerebral interstitial fluid and of cerebrospinal fluid into lymphatics;Bradbury,1985
3. Transmission of passive immunity from mother to young;Brambell;Front. Biol.,1970
4. Immunologically priveled sites;Brent,1990
5. Cellular and humoral immune responses in human cerebrospinal fluid;Brooks,1983