Protocol illustrates the rules of successful long PCR: No more than 1 ng of template DNA is used per microliter of PCR in a 100-µl reaction; approximately 0.1 µl of KlentaqLA (not plain Taq) is used per kilobase of target (for targets >10 kb, 1-1.3 µl of enzyme should be used); the Mg++ concentration is considered as the excess over the level of dNTPs.
