Objective To investigate the expression of an autolysin gene(lytA)at different times during the growth of Streptococcus pneumoniae. Methods Specific primers were designed and synthesized in accordance with the sequence of the lytA gene of the M66 strain registered in GenBank(FN549899.1).Total RNA was extracted from samples collected at 17 time points during the growth of S.pneumoniae.The relative expression of lytA gene at different times during the growth of S.pneumoniae was determined with real-time quant...