title: Antagonism and synergism between lead and zinc in amphibian larvae.
abstract: Lead and zinc effects on Bufo arenarum larval survival were studied in single and combined treatments. On a weight basis, lead is about twice as toxic as zinc. The antagonism or synergism between these heavy metals is dose-dependent.
authors.affiliation: Instituto de Biología de la Reproducción y Desarrollo Embrionario, Universidad Nacional de Lomas de Zamora, C.C. 95 1832 Lomas de Zamora (B), Argentina.
authors.forename: J
authors.initials: J
authors.lastname: Herkovits
authors.forename: C S
authors.initials: CS
authors.lastname: Pérez-Coll