particulate membrane preparations isolated from cambial cells and differentiating and differentiated xylem cells of pine ( pinus sylvestris l. ) trees synthesised [ ( 14 ) c ] glucans using either guanosine 5'-diphosphate ( gdp ) -d- [ u- ( 14 ) c ] glucose or uridine 5'-diphosphate ( udp ) -d- [ u- ( 14 ) c ] glucose as glycosyl donors .
C0007634
cells
C0007589
differentiated