Hot Start Taq DNA Polymerase is a recombinant, thermostable Taq DNA polymerase complexed with a thermolabile, neutralizing antibody that blocks the polymerase activity prior to the initial DNA denaturation step of PCR. When the temperature of the PCR reaction mix reaches 95°C during the initial DNA denaturing step of PCR cycling, activity of the Taq DNA polymerase is fully restored.