Table 1.

Primers for construction of the recombination HA gene

Gene segment	Primer names	Primer sequence (5'-3')
HALo-1	1-F	TATTCGTCTCAGGGAGCRAAAGCAGGGG
	1-R	CAAATAGGCCTCTTCCCTTTGGAACCTCAGGAA
HALo-2	2-F	AGGTTCCAAAGGGAAGAGGCCTATTTGGTGCTAT
	2-R	ATATCGTCTCGTATTAGTAGAAACAAGGGTGTTTT
HALo-mH3-1	1-F	TATTCGTCTCAGGGAGCRAAAGCAGGGG
	1-R	TGTTTTTTCAAACAGTTTGTTCATTTCTGAGTCAGC
HALo-mH3-2	2-F	TATTCGTCTCAGGGAGCRAAAGCAGGGG
	2-R	CCCTCAGTTGCTTCTTTGTTTTTTCAAACAGTTT
HALo-mH3-3	3-F	AAGAAGCAACTGAGGGAAAATGCTGAAGAAGATGG
	3-R	ATATCGTCTCGTATTAGTAGAAACAAGGGTGTTTT