--------------------------------------------------------------- rn4.trackDb.html : Differences exist between hgwbeta and hgw2 (RR fields taken from public MySql server, not individual machine) 7509c7509 < mgcFullMrna | This track show alignments of rat mRNAs from the --- > mgcFullMrna | This track shows alignments of rat mRNAs from the 7514c7514 < mgcFullMrna | clones for human, mouse, rat, xenopus, and zerbrafish genes. --- > mgcFullMrna | clones for human, mouse, and rat genes.