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Study on Heating-stable Protection of Infectious Bursal Disease

Shen Yongzhou et al (Anhui Eco-food Biotechnology Company Ltd,Hefei,Anhui 230041)  
the best heating-stable protection was mixed with avian infectious bursal disease. They were heated for 7?d,14?d and 21?d at 38?℃.The EDL 50 /(0.1?ml)were 10 -3.2 ,10 -3.5 and 10 -2.0 ;the percent were 8.8%, 0% and 42.9%, respectively.
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