Hi! I want to try to make a PCR with DNA fragments wich will result in a product of about 6-7 kb. I wonder if anyone has tried this before, I know that it should be possible, but I don't find any informations about it. Who can help me with his own experience or literature? Thanks, Nina Nina Schweigert Station Biologique de Roscoff-FRANCE e-mail : schweige at sb-roscoff.fr