Trisialosyllactosylceramide (GT3) is a ganglioside of human lung

Abstract
A trisialoganglioside not found before in human tissue was isolated from human adult lung. Structural characterization showed this to be II3(NeuAc)3-LacCer or GT3. The ganglioside constituted 40% of the trisialogangliosides of human lung or 0.2 nmol ganglioside per g tissue.