案情简介2011年始,马某在北京市某牛羊肉市场从事冷鲜肉经营活动。2016年4月9日,马某从中间商吴某处购进20公斤羊肝对外销售,进货时未索要检验检疫票据,未建立进货和销售记录。4月11日,北京市某区食品药品监督管理局对该市场进行监督抽查。经抽检,马某购进的该批次羊肝中含克伦特罗(俗称“瘦肉精”)为195ug/kg,依据农业部《动 Brief introduction of the case 2011, Ma Mou in Beijing, a beef and mutton market engaged in cold meat business activities. April 9, 2016, Moumou Wu from the middleman to buy 20 kg of liver oil for sale outside the purchase did not ask for inspection and quarantine bills, not to establish purchase and sales records. April 11, a district of Beijing Food and Drug Administration supervision and spot checks of the market. The sampling, Ma purchase of the lot of sheep with clenbuterol (commonly known as “clenbuterol”) 195ug / kg, according to the Ministry of Agriculture, "move