Steve Reppert and David Weaver recently published a review article in
Cell (83:1059-1062; 1995) that does a good job of reviewing the
scientifically valid data on melatonin's actions in vertebrates. There
are many excellent references cited in this paper that will be very helpful.
Mark J. Zylka
Program in Neuroscience
Harvard Medical School
mzylka at student.med.harvard.edu