Fig. 3. Expression patterns of GFP-tagged LIM-IB (A,D),
-actinin in the same fields (B,E) and the merged images with LIM-IB and
-actinin in the green and red channels, respectively (C,F). LIM-IB was co-localized with
-actinin at the cell periphery (asterisks), in myofibril precursors (arrows), and at Z-lines (arrowheads), with no apparent disruption of
-actinin organization. Summing the striated areas visualized by
-actinin staining (areas within dashed magenta lines in B) and dividing by the total cell area visualized by GFP fluorescence (area within the solid magenta line in A) yields a morphometric measure of myofibril content (Carroll et al., 2001).