Fig. 5

Correlations between the extent of capillaries penetrating the epidermis, thickness of the epidermis, perfused subepidermal capillary density, and stratum compactum thickness across 10 body regions in Leptobrachium boringii. Symbols are used to distinguish individuals of the same group, and regional mean values are plotted. The marginal (R2m) and conditional (R2c) coefficients of determination and P values were derived from generalized linear mixed models where individual was included as a random factor. MDPL: average minimum diffusion path length of subepidermal capillaries