Bicistronic vector-based procedure to measure correlative expression and bacteriostatic activity of recombinant neutrophil gelatinase-associated lipocalin oleh Somphot Saoin, Naphatswan Arunyanak, Pornuma Muangchan, Chatikorn Boonkrai, Trairak Pisitkun, Chiraphat Kloypan, Sawitree Nangola