PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9412501-4 1998 Sod2 -/+ mice demonstrated a prominent increase in O2- production under normal physiological conditions and in ischemia, as evidenced by specific oxidation of a fluorescent probe, hydroethidine, reflecting decreased activity of Mn-SOD. Superoxides 51-53 superoxide dismutase 2, mitochondrial Mus musculus 0-4