a ganglioside GM2 (d18:1(4E)) + D-galactose => a ganglioside GM1 (d18:1(4E)) + H2O
a ganglioside gm2 (d18:1(4e)) + d-galactose => a ganglioside gm1 (d18:1(4e)) + h2o
a ganglioside GM2 (d18:1(4E)) + D-galactose => a ganglioside GM1 (d18:1(4E)) + H2O
a ganglioside gm2 (d18:1(4e)) + d-galactose => a ganglioside gm1 (d18:1(4e)) + h2o