TABLE 2.

Primers used in this study.

Primer	Sequence (5′→3′)	Restriction site
P1	tat​gac​cat​gat​tac​aag​ctt​CGG​TGA​AAA​CCT​GAA​CAG​TGC	HindIII
P2	TGG​TCT​GAG​TTG​GGC​CTA​TAG​ACC​CCT​GTT​TTG​GAG​AAT​GCT
P3	AGC​ATT​CTC​CAA​AAC​AGG​GGT​CTA​TAG​GCC​CAA​CTC​AGA​CCA
P4	acg​acg​gcc​agt​gcc​gaa​ttc​TAC​ATC​TCC​AGC​TTC​ATC​ACC​CC	EcoRI