use polyA+ RNA (or RNAse - hehe) Wo At 16:47 19.05.2003 -0000, rs_santhosh at hotmail.com wrote: >in my northern blot the 23s and 16s bands are lighting up how I can eliminate this problem > > >http://biowww.net/mynews/tree.php?group_name=bionet_molbio_methds-reagnts&b egin=0 > > ---