The primer sequences for microarray.

aF for forward primers and R for reverse primers.bAll the reverse primers with a Cy3- or biotin-labeled 5′-end.cNumber of the position of the primer according to GenBank accession number CY081570.dNumber of the position of the primer according to GenBank accession number CY091828.eNumber of the position of the primer according to GenBank accession number HQ011421.fNucleotides in italic showed the natural variants of different subtypes.gThe primers for neuraminidase were used for oseltamivir-resistant mutation fragment amplification and the primers of matrix protein were used for amantadine-resistant mutation fragment amplification.