抗型 meaning in English

resistant form

Colibacollosis serotype k . 99 positive sera in ducks and duck plague positive sera were tested , whereas , the results of detection to r . a . sera were positive . the sensitivity of indirect elisa were 50 to 100 times ( serotype 1 ) , ( 2 ) 25 to 100 times ( serotype 2 ) , ( 3 ) 12 to 100 times ( serotype 4 ) and 25 to 200 times ( serotype 5 ) th an micro - agglutination test
包被鸭疫里默氏杆菌抗原时，对鸭抗5 ： a多杀性巴氏杆菌阳性血清、鸭抗型鸭病毒性肝炎阳性血清、鸭抗鸭源大肠杆菌k _ ( 88 )阳性血清、鸭抗鸭源肠炎沙门氏菌阳性血清、鸭抗鸭源大肠杆菌k _ ( 99 )阳性血清、鸭抗鸭瘟阳性血清检测结果呈阴性。