One strain virus was isolated from dead pigeon by SPF chicken embryos.
用SPF鸡胚，从病死鸽的脑组织中分离到一株病毒。
One strain virus was isolated from affected pigeons of showing Newcastle disease syndrome by SPF chicken embryo.
用SPF鸡胚从疑为鸽新城疫的云南省某信鸽场分离到一株毒株。
The result demonstated that the modified measure could lower operating costs for SPF chicken in bio-clean house as well as could keep or increase the microbe…
该方案是我所在保持或提高鸡群净化质量的前提下，降低SPF鸡生物洁净室运行成本而进行探索的途径之一。
The result demonstated that the modified measure could lower operating costs for SPF chicken in bio-clean house as well as could keep or increase the microbes eliminating quality.
该方案是我所在保持或提高鸡群净化质量的前提下，降低SPF鸡生物洁净室运行成本而进行探索的途径之一。
From dead chickens, one virus was isolated using SPF egg and chicken embryo fibroblast.
用SPF鸡胚及鸡胚成纤维细胞，从病死鸡的脑组织中分离到一株病毒。
Experiment 1, a strain of IBDV was isolated from IBDV-suspected chickens in Shandong province and the pathogenicity on specific pathogen free (SPF) chicken was studied.
试验1中，从山东省某疑似感染IBDV的鸡场分离到1株IBDV野毒，并就其对SPF鸡的致病性进行了研究。
Experiment 1, a strain of IBDV was isolated from IBDV-suspected chickens in Shandong province and the pathogenicity on specific pathogen free (SPF) chicken was studied.
试验1中，从山东省某疑似感染IBDV的鸡场分离到1株IBDV野毒，并就其对SPF鸡的致病性进行了研究。
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