Figure 2. Venus signals were detected in flexor digitorum profundus (FDP) tendons, pulleys, and the VPs in P21 Venus knock-in Mkx+/− and −/− mice.
(A, D, G, and J)Venus signals of Mkx−/−, Mkx+/−, and wild-type (WT) digits at P21. (B, E, H, and K) DAPI (4′6-diamidino-2-phenylindole) staining of a section of Mkx−/−, Mkx+/−, and WT digits at P21. (C, F, I, and L) Merge of a section of Mkx−/−, Mkx+/−, and WT digits at P21. Pink dashed arrows, VPs. White arrows, FDP tendons. Red arrowheads, pulleys. Scale bar, 100 µm.