Table 1.

Primers used for cloning LTB and LTB chimeric proteins.

Gene	Primer	Sequence*
LTB-NC	For	CATGCCATGGGCGCGGCGGAGGCG
	Rev	CCGCTCGAGGGTTTTATACGCGTCAATGTGC
LTB-NN	For	CATGCCATGGGCAACAACACCGCGAGC
	Rev	CCGCTCGAGGCTGCCTTCCGCGTAAAAACC
LTB	For	CATGCCATGGGCAACAAGGTGAAATGCTACG
	Rev	CCGCTCGAGGTTTTTCATGCTAATCGCCGCGATGC

^*Bold underlined nucleotides indicate restriction sites.