Staphylococcus epidermidis was sensitive to cefazolin and amikacin . Escherichia coli was generally resistant to the commonly antibiotics and the drug resistant rate , especially to laevomycetin , ampicillin and cefazolin , was 100 % .
Study of microbiological determination method for ampicillin resid ues in tissues of pigs and chickens .
氨苄青霉素在猪和鸡组织残留的微生物测定法研究。
And they found that five years after a new road was constructed , the villages closest to that road saw a rise in resistance to ampicillin and sulphamethoxazole-nearly double that found in more remote regions .