**An Assay for Determination of Hepatic Zinc by AAS – Comparison of Fresh and Deparaffinized Tissue**

Raquel Borges Pinto1, Pedro Eduardo Fröehlich2, Ana Cláudia Reis Schneider3, André Castagna Wortmann3, Tiago Muller Weber2 and Themis Reverbel da Silveira1,\* *1Post Graduate Program in Medicine: Pediatrics, 2Post Graduate Program in Pharmaceutical Sciences, UFRGS, Porto Alegre, 3Post Graduate Program in Medical Sciences: Gastroenterology and Hepatology, Universidade Federal do Rio Grande do Sul (UFRGS), Hospital de Clínicas de Porto Alegre, Brazil* 
