Figure 2: Deep sampling by sequential tape-stripping.
From: Large-scale human skin lipidomics by quantitative, high-throughput shotgun mass spectrometry
Samples from various stratum corneum stripping layers were collected from one male and one female. (a) Amounts of lipids measured in different layers. Lines connect the means of each layer. (b) Cholesterol esters species percentage varying across layers in a male subject. (c) Male and (d) female profiles of lipid groups in different layers. CER are all ceramide classes summed up. Lines connect the means of each layer. (e–h) Principal component analysis of the different layer lipidomes with lipid sub-species as input. Numbers indicate layers for every replicate. (e) Male and (g) female samples with all lipids used for PCA; and (f) male and (h) female samples were only ceramides were used as input.
