PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2163738-2 1990 It was observed that activities of total SOD, Cu, Zn-SOD and Mn-SOD in HCC tissue were lower than those in normal liver tissues respectively (P less than 0.001 & 0.01 less than P less than 0.05). Adenosine Monophosphate 161-164 superoxide dismutase 2 Homo sapiens 61-67 2163738-5 1990 This study suggests that decreased content of copper, zinc and manganese may be one of the factors that lead to impairment of SOD activity. Copper 46-52 superoxide dismutase 1 Homo sapiens 126-129 2163738-5 1990 This study suggests that decreased content of copper, zinc and manganese may be one of the factors that lead to impairment of SOD activity. Manganese 63-72 superoxide dismutase 1 Homo sapiens 126-129