TGF-β1 amounts were also similar in the CR, EH, and CH groups (48.1 (38.6, 54.8) vs. 52.5 (49.0, 56.0) vs. 54.0 (42.6, 56.4) ng/L; P = 0.297). This evidence concerns the gene TGFB1 and cyclic hematopoiesis.