Fig. 7From: Effect of bFGF and fibroblasts combined with hyaluronic acid-based hydrogels on soft tissue augmentation: an experimental study in ratsRT-PCR of human collagen type I. Human type I collagen was detected in hydrogel combined with bFGF (HB), hydrogel combined with fibroblasts (HF), and hydrogel mixed with bFGF and fibroblasts (HBF). GAPDH was used as an internal control. H: hydrogel onlyBack to article page