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Fig. 3. Principal component analysis (PCA) based on the number of moles per gram of
dry SC of each sphingolipid family in the SC of house sparrows. (A) Scores for
individual house sparrows from desert (open circles) and mesic environments
(filled circles). (B) Eigenvectors for each sphingolipid family.
Abbreviations: CEOS, ceramide EOS; CNS, ceramide NS; CEOH, ceramide EOH; CAH,
ceramide AH; NS, cerebroside NS; NP, cerebroside NP; EOH, cerebroside EOH;
AS-NH, cerebroside AS-NH; AH, cerebroside AH; NH, cerebroside NH; DIOS,
diosylceramides. O, origin of coordinates.