MAO-A knockout MAOA-KO http://identifiers.org/mgd/MGI:2180818 Maoa<Tg(H2-IFNB)8Seif> transgene insertion 8, Isabelle Seif Tg8 Null/knockout|Inserted expressed sequence MGI:2180818 Maoa<Tg(H2-K1-Ifnb1)8Seif>