Table 1.

Summary of LCMS analysis of PEX reaction products.

PEX reaction condition	m/z found	m/z calculated	Nature of product
Taq and 3′-phos-dTTP 5	6124.092	6124.091	P1 + 2dA+dC
Therminator and 3′-phos-LNA-TTP 10	10185.786	10185.788	Fully extended primer P1 with dA incorporated instead of dT