I was wondering whether anybody knew of any good universal invertebrate mtDNA primers. They do not have to be invertebrate-specific, but I need them to amplify most inverts, including worm and slug, with an amplicon size of 100-300bp. I've tried various combinations of the Simon et al (1994) primers (C1J2183, C1J2195, C2J3400, C2J3571, C1N2329, C1N2353, C2N3494, C2N3661) but haven't found any which will amplify both worm and slug. Any suggestions welcome. Regards David Brown Cardiff University