Fig. 2From: microRNA profiling in the Weddell seal suggests novel regulatory mechanisms contributing to diving adaptationPCA plot based on microRNA expression across all 24 samples. a PCA plot of principal components 1 and 2. Colour labels are based on both the tissue origin and developmental stage of the individual. b PCA plot of principal components 3 and 4. Colour labels separate the two developmental stages (pup and adult)Back to article page