human peripheral blood lgl , which were purified by removal of monocytes adhering to plastic flasks and nylon columns , followed by separation on a discontinuous percoll gradient , and additional treatment with anti-okt3 and leu-m1 plus complement , were more potent producers of these lymphokines than unseparated mononuclear cells ( mnc ) , nylon column-eluted cells , or purified t lymphocytes .
C0032167
plastic
C0028736
nylon