PCR amplification and cloning of metallothionein complementary DNAs in temperate and antarctic sea urchin characterized by a large difference in egg metallothionein content. - SCUDIERO, ROSARIA; CARGINALE V.; RIGGIO M.; CAPASSO C.; CAPASSO A.; CIARAMELLA M.; PARISI E.; FILOSA, SILVANA (Birkhaeuser Verlag AG:Viaduktstrasse 42-44, CH 4051 Basel Switzerland:011 41 61 2050707, EMAIL: subscriptions@birkhauser.ch, INTERNET: http://www.birkhauser.ch, Fax: 011 41 61 2050792, 1997)