to investigate this possibility in streptococcus lactis 133 , lactose derivatives have been prepared containing 14c-labeled 2-deoxy-glucose ( 2dg ) , 2-deoxy-2-fluoro-d-glucose ( 2fg ) , or alpha-methylglucoside as the aglycon substituent of the disaccharide .
C0022949
lactose
C0012611
disaccharide