To be defined as a ganglioside, a lipid substance isolated from nervous tissue must contain in its structure
N-Acetylneuraminic acid (NANA), hexoses, sphingosine, long chain fatty acid NANA, a hexoses, a fatty acid, sphingosine, phosphorylcholine NANA, Phingosine, ethanolamine NANA, hexoses, fatty acid, glycerol