RT in taq

[NEAL MUSTO]

Tracy;
In a word "contamination". We experienced a similar thing andit turned
out to be a contaminated OLIGO. Some plasmid containing the cDNA we were
interested in, and generally used as a positive control, somehow got in.
No matter how we trerated our samples the band showed up. Had to throw
out our stocks. Look in to that aspect
Neal Musto
Cell Biology 
Georgetown University