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为查明我市重点职业人群布鲁氏菌感染情况，我们于1991年9月对本市重点职业人群进行调查，结果如下。一、材料和方法（一）皮内试验（二）凝集试验：采集本市与畜及畜产品有密切接触史的重点职业人群453人静脉血，分高血清。作试管定量凝集试验。1．布氏菌试管凝集菌液：批号91
To identify the city’s major occupational groups of brucellosis, we surveyed in September 1991 the city’s key occupational groups, the results are as follows. I. MATERIALS AND METHODS (I) Intradermal test (II) Agglutination test: 453 key occupational groups with a history of close contact with livestock and livestock products in the city were collected for venous blood and high serum. Test tube quantitative agglutination test. 1. Brucella tube coagulation bacteria solution: lot number 91