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Fig. 3. Rhodopsin-like immunoreactivity in the pineal eye of 1.5 d.p.f., 2.5
d.p.f., 3.5 d.p.f. and 4.5 d.p.f. surface fish (A–H), Pachón
cavefish (I–P), and Tinaja cavefish (Q–X) larvae.
(A,C,E,G,I,K,M,O,Q,S,U,W) Bright field images with focus on the pineal eye.
(B,D,F,H,J,L,N,P,R,T,V,X) Fluorescence images of the same specimens as those
shown in bright field. Larvae are shown from the left side with the head at
the top. Arrowheads mark pineal eye; arrows mark bilateral eye. Scale bar in
X, 100 µm; magnification is the same in each frame.