an N-acyl-sphingoid base + D-glucose => a beta-D-glucosylceramide + H2O
an n-acyl-sphingoid base + d-glucose => a beta-d-glucosylceramide + h2o
an N-acyl-sphingoid base + D-glucose => a beta-D-glucosylceramide + H2O
an n-acyl-sphingoid base + d-glucose => a beta-d-glucosylceramide + h2o