human nasopharyngeal epidermoid carcinoma ( kb ) cells contain a membrane-associated particulate folate-binding protein which is important in the cellular accumulation of physiologic folates ( antony , a. c. , kane , m. a. , portillo , r. m. , elwood , p. c. , and kolhouse , j. f. ( 1985 ) j. biol . chem . 260 , 14911-14917 ) and in the binding of methotrexate ( kane , m. a. , portillo , r. m. , elwood , p. c. , antony , a. c. , and kolhouse , j. f. ( 1986 ) j. biol . chem . 261 , 44-49 ) .
C0007634
cells
C0007613
cellular