a D-galactosylceramide + H2O = an N-acyl-sphingoid base + D-galactose
a d-galactosylceramide + h2o = an n-acyl-sphingoid base + d-galactose
a D-galactosylceramide + H2O = an N-acyl-sphingoid base + D-galactose
a d-galactosylceramide + h2o = an n-acyl-sphingoid base + d-galactose