Fig. 1.

Photomicrographs of a putative axon terminal (A) and melanotrophs (B) stained with Hoechst 33342. A-1 and B-1were taken while the cells were simultaneously illuminated by transmitted light from the halogen lamp and by UV excitation light (370 ± 10 nm) for epifluorescence. A-2 andB-2 are corresponding epifluorescence images. Scale bar, 10 μm.