dice|6820443O06Rik|D12Ertd777e|Nesp2g|syne-2|nesprin-2|diminished cone electroretinogram|Cpfl8 http://identifiers.org/mgd/MGI:2449316 genetic mapping 6820443O06Rik dice nesprin-2 D12Ertd777e Gene Cpfl8 spectrin repeat containing, nuclear envelope 2 Nesp2g protein coding gene O + diminished cone electroretinogram syne-2 MGI:2449316 Syne2