Make the following paragraph more coherent:
Furthermore, Muse cell-derived melanocytes showed melanin production. When Muse cell-derived melanocytes was transplanted onto the back skin of severe combined immunodeficient mice, Muse integrated to the basal layer of the epidermis producing melanin in vivo.
Furthermore, Muse cell-derived melanocytes showed melanin production. Moreover, when Muse cell-derived melanocytes was transplanted onto the back skin of severe combined immunodeficient mice, they integrated to the basal layer of the epidermis producing melanin in vivo.