Zukhiroh, Z.; Putra, A.; Chodidjah, C.; Sumarawati, T.; Subchan, P.; Trisnadi, S.; Hidayah, N.; Amalina, N. D. Effect of Secretome-Hypoxia Mesenchymal Stem Cells on Regulating SOD and MMP-1 MRNA Expressions in Skin Hyperpigmentation Rats. Open Access Maced J Med Sci 2022, 10, 1-7.