genome mm39_adam19tdt trackDb https://orio.niehs.nih.gov/ucscview/Adam19/mm39_adam19tdt/trackDb.txt description mm39+chrAdam19TdT containing mutant Adam19_TdTomato twoBitPath https://orio.niehs.nih.gov/ucscview/Adam19/mm39_adam19tdt/mm39canonical.chrAdam19TdT.2bit organism Mus musculus with chrAdam19TdT scientificName Mus musculus defaultPos chrAdam19TdT groups mm39_adam19tdt/groups.txt