Construction of a telomerase-immortalized porcine tracheal epithelial cell model for swine-origin mycoplasma infection oleh Xing XIE, Fei HAO, Hai-yan WANG, Mao-da PANG, Yuan GAN, Bei-bei LIU, Lei ZHANG, Yan-na WEI, Rong CHEN, Zhen-zhen ZHANG, Wen-bin BAO, Yun BAI, Guo-qing SHAO, Qi-yan XIONG, Zhi-xin FENG