Figure 2.
Entropy plots. (A) The nucleotide variation amongst the 99 bp fragment of the AIV M gene segment (positions 25–124) amplified by protocols 1, 2 and 3 shown as entropy. (B) The nucleotide variation amongst the 182 bp fragment of the AIV M gene segment (position 77–259) amplified by protocol 4 shown as entropy. The height of each column is proportional to the nucleotide variation at the given position. In red the primers and probes binding regions.