Clive Boorman wrote: > Is there any other reason why we may be getting no PCR product from > genomic DNA, when we can get a product from mRNA (RT-PCR) everytime ? Ummm, just maybe because the introns are too large? -- John Lye e-mail to: rjl6n at Virginia.EDU homepage: http://avery.med.virginia.edu/~rjl6n/homepage.htm