DKK3 and keratoconus: Mirroring the in vivo findings (Figure 1C–F), DDKC acini displayed significantly greater and accelerated ADM than KC after just one day in culture (Figure S2H,I, Supporting Information), accompanied by higher expression of ductal genes in DDKC and a time‐dependent induction of Dkk3 in KC from day 1 to day 3 (Figure S2J, Supporting Information).