Fig. 3. Loss of Mlp84B does not grossly disrupt muscle structure. (A,A') Wild-type third-instar muscle fillets labeled with actin (A) or
-actinin (A'). Bars, 200 µm (A); 20 µm (A'). (B,B') Fillets from Df(3R)dsx2M/Df(3R)Scx2 transheterozygous third-instar labeled with actin (B) or
-actinin (B'). (C) Ultrastructural analysis of flight muscle from wild-type (upper panel) and Mlp84B-deficient (lower panel) flies; bar, 10 µm. Double-headed arrows in each panel delineate one sarcomere, bounded by two Z-discs (electron-dense lines), with the M-lines in the middle (lighter line).