Table 1. IUPAC codes for incompletely specified bases in nucleic acid sequences.
| G/A | C/T | A/C | G/T | G/C | A/T | not A | not C | not G | not T | any base |
|---|---|---|---|---|---|---|---|---|---|---|
| R | Y | M | K | S | W | B | D | H | V | N |
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