Fig. 8.

Expression of interfilamentous proteins in the skin, operculum, caudal fin and pectoral fin. For each sample, the left picture shows the complete tissue section within the capture frame; magnified areas are indicated by black circles, and detailed views of the complete section are given to the right. Keratins had the overall highest expression rates in the fin and operculum. In the skin, they were primarily expressed in the epithelial layer. Vimentin (ENS0000073113) was expressed around scale pockets in the skin, in a fold in the operculum, and primarily in the mesenchyme of the fins. Desmin (ENS00000101128 and ENS0000040563) was transcribed in skeletal muscle tissue attached to the skin sample and in the opercular fold, with limited expression in fins. The figure displays keratin genes as the average gene expression of “keratins” (as listed in Supplementary File 1), and the color of the spots indicates Log2 expression.