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. Author manuscript; available in PMC: 2006 May 24.
Published in final edited form as: Vision Res. 2005 Sep 19;45(28):3469–3486. doi: 10.1016/j.visres.2005.07.033

Fig. 3.

Fig. 3

(A´) In some turtle photoreceptor ellipsoids (E) there were typical mitochondria (white arrow) and also some atypical mitochondria (black arrows) in the ellipsoids of rods and accessory elements of double cones (A) have nNOS-LI which increased their overall electron density and was most apparent in the intermembrane space. There was also some nNOS-LI associated with their outer segments. (B´) Some presumptive amacrine cell processes had mitochondria (M) with nNOS-LI. (C´) In some amacrine cell synaptic terminals, the nNOS-LI was only associated with the presynaptic region of conventional synapses (arrow in C´). Some amacrine cell synaptic terminals made more than one conventional synaptic contact, only some of which had nNOS-LI at their presynaptic specialization (C´, arrow, with nNOS-LI; arrowhead, without nNOS-LI). (D´) In some bipolar cell terminals (B), there was a patch of cytoplasmic nNOS-LI (arrow) associated with the plasma membrane some distance from the ribbon synapse (arrowhead). Scale bars: A´ and B´, 0.5 μm; C´ and D´, 0.25 μm.