The nitric oxide synthase (NOS)-like immunoreactive extrahypophysial projections of the neurosecretory preoptic nucleus of the electric ray (elasmobranchs) suggest a neuroregulatory role for this nucleus

1. Pérez, S.E.
2. Adrio, F.
3. Rodríguez, M.A.
4. Anadón, R.
5. Rodríguez-Moldes, I.