TABLE 3.

Inhibitory effects of different size-exclusion chromatography fractions of plasma on PCR^a

Peak no.	Molecular massb (kDa)	PCR resultsc at dilution of:
		Undiluted	1:10	1:50	1:100	1:200
P1	∼800	−	−	+	+	+
P2	∼200	−	−	−	−	+
P3	∼80	−	−	+	+	+
P4	<13	+	+	+	+	+
P5	<13	+	+	+	+	+
P6	<13	+	+	+	+	+

^aAbility of AmpliTaq Gold to amplify 1 ng of L. monocytogenes DNA in the presence of 5 μl of different dilutions of plasma fractions. 

^bPeaks P4, P5, and P6 were outside the range of the size marker. 

^cSymbols: +, band of high intensity; −, no band.