it is concluded that following transection , ( 1 ) wallerian degeneration produces an irreversible increase in perineurial permeability , ( 2 ) the increase of perineurial permeability follows a proximodistal gradient , and ( 3 ) the frog peripheral nerve develops endoneurial edema during wallerian degeneration as do degenerated nerves of mammals .
C0031119
peripheral nerve
C0205888
endoneurial