Ahmad Fiqri, Suci Widhiati, Prasetyadi Mawardi, Novan A. S., Ferry Arrochman, Indah Julianto, Ria Margiana. A Histopathological Review of Conditioned Medium Exosomes from Wharton’s Jelly Derived Mesenchymal Stem Cells Administration to Skin Collagen Deposition of Aged Wistar Rats. Annals of RSCB 2021, 25, 1377-1383.