Table 1.

Quantification of single and double round T7 amplification of input ChIP DNA

Input (ng)	Yield after single T7 (ng)	Yield after double T7 (ng)
0	<100a	112
0.4	<100a	4960
1	<100a	20160
2.5	<100a	35840
5	420	50240b
20	2480	NDc
80	9880	NDc

^aexact quantification was not possible because of low yield.

^b150 ng from single T7 was used for second round of double T7.

^cNot determined.