Aquatic Toxicology 63 (2003) 307-318 ; Metallothioneins (MT) were obtained after purification from metal-exposed clams (Ruditapes decussatus) using gelpermeation and ion-exchange chromatography. Four cadmium /metallothioneins (CdMTs) were resolved by ionexchange chromatography and they all had similar molecular weights, high cadmium content and an absorption spectra indicative of the presence of characteristic...
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