N-Palmitoylsphingosine/N-Lignoceroylsphingosine:SRto:Pt:Plas:Qn
n-palmitoylsphingosine/n-lignoceroylsphingosine:srto:pt:plas:qn
C16 ceramide/C24 ceramide (P) [Molar ratio]
c16 ceramide/c24 ceramide (p) [molar ratio]