Fig. 1

Hematocrit (A), HGB concentration (B), and RBC count (C) of SRBCs in the three groups. The HAC and HAPC groups correspond to the Tibetan population, and LLC group D corresponds to the Han population dwelling in Chengdu. Asterisks indicate statistical significance (ANOVA with Bonferroni correction for multiple comparisons—* p < 0.05; ** p < 0.01; *** p < 0.001)