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Restriction Enzymes Resource

Table 3.10. IUPAC Ambiguity Codes for Nucleotide Degeneracy

R = A or G K = G or T S = G or C
Y = C or T M = A or C W = A or T
B = not A (C, G or T) H = not G (A, C or T) N = any nucleotide
D = not C (A, G or T) V = not T (A, C or G)  

 

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