4.1.2.20	expressed in Escherichia coli BL21 (DE3) cells	
4.1.2.20	expressed in Escherichia coli BL21 CodonPlus (DE3)-RIL cells	
4.1.2.20	expression in Escherichia coli BL21	
4.1.2.20	into the plasmid pT7 for expression in Escherichia coli B834DE3 pLacIRARE2 cells