Fig. 8. Comparison of the tip of the filaments in all four species using antibody
immunolabelling of serotonin (5-HT) and synaptic vesicle marker (SV2): (A)
O. mykiss, (B) C. auratus, (C) H. lacerdae and (D)
H. malabaricus. Colocalization appears yellow. Scale bars, 100
µm.