Applied Biosystems AmpliTaq Gold DNA Polymerase with Gold Buffer and MgCl2, Includes: 12 tubes (50uL at 5U/uL) of AmpliTaq Gold DNA Polymerase (250 units total per tube); 12 tubes (1.5mL) of GeneAmp 10X Gold Buffer (150mM Tris-HCl, pH 8.0, 500mM KCl); 12