研究表明，广东省猪、禽养殖场大肠杆菌的HPI携带率较高，血清型复杂。
The research showed higher positive rate of HPI and complex serotypes in E. coli from the diseased farms in Guangdong Province.
研究表明，广东省猪、禽养殖场大肠杆菌的HPI携带率较高，血清型复杂。
The research showed higher positive rate of HPI and complex serotypes in E. coli from the diseased farms in Guangdong Province.
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