title: The cerebral and meningeal venous valves during human ontogenesis.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging; D002550:Cerebral Veins / Q000033:anatomy & histology / Q000196:embryology / Q000254:growth & development*; D005314:Embryonic and Fetal Development; D006801:Humans; D008578:Meninges / Q000033:anatomy & histology / Q000098:blood supply* / Q000254:growth & development; D008875:Middle Aged