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. 2019 Mar 19;7(1):16. doi: 10.3390/toxics7010016

Table 2.

Numbers of possible isomers of NNK-derived DNA phosphate adducts.

B1-B2 Number of Possible Isomers Total
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A-A 2 2 4 8 16
C-C 2 2 4 8 16
G-G 2 2 4 8 16
T-T 2 2 4 8 16
A-C 4 4 8 16 32
A-G 4 4 8 16 32
A-T 4 4 8 16 32
C-G 4 4 8 16 32
C-T 4 4 8 16 32
G-T 4 4 8 16 32
Total 32 32 64 128 256

* Chiral center.