▁they ▁have ▁a ▁c is - reg ul atory ▁function ▁in ▁cont rolling ▁expression ▁of ▁the ▁down stream ▁oper ons . ▁ ▁See ▁also ▁Rh iz ob ial es - 2 ▁R NA ▁mot if ▁ ▁References ▁ ▁External ▁links ▁▁▁ ▁Category : C is - reg ul atory ▁R NA ▁elements <0x0A> </s> ▁Abr onica ▁is ▁a ▁genus ▁of ▁sea ▁sl ugs , ▁a e olid ▁n ud ib ranch s . ▁It ▁is ▁the ▁only ▁genus ▁in ▁the ▁family ▁Abr onic idae , ▁which ▁was ▁first ▁named ▁in ▁ 2 0 1 7 . ▁ ▁Species ▁within ▁the ▁genus ▁Abr onica ▁include : ▁ ▁Abr onica ▁ab ron ia ▁( Mac F ar land , ▁ 1 9 6 6 ) ▁ ▁Abr onica ▁pur p ure o an ul ata '' ▁B aba , ▁ 1 9 6 1 ▁ ▁References ▁ ▁Category : A br onic idae ▁Category : G ast rop od ▁gener a <0x0A> </s> ▁The ▁canton ▁of ▁Mey lan ▁is ▁an ▁administrative ▁division ▁of ▁the ▁Is ère ▁department , ▁eastern ▁France . ▁Its ▁borders ▁were ▁modified ▁at ▁the ▁French ▁canton ▁re organisation ▁which ▁came ▁into ▁effect ▁in ▁March ▁ 2 0 1 5 . ▁Its ▁seat ▁is ▁in ▁Mey lan . ▁ ▁It ▁consists ▁of ▁the ▁following ▁communes : ▁▁ ▁B iv iers ▁Cor enc ▁Dom ène ▁Mey lan ▁Mont bon not - Saint - Martin ▁Mur ian ette ▁Le ▁S app ey - en - Chart re use ▁La ▁Tr on che ▁ ▁References ▁