CRISPR/Cas9-mediated gene repair in the COL7A1 gene. Posted byadmin 28. July 2020 Prochazka, KT, Melchardt, T, Posch, F, Schlick, K, Deutsch, A, Beham-Schmid, C, Weiss, L, Gary, T, Neureiter, D, Klieser, E, Greil, R, Neumeister, P, Egle, A, Pichler, M.