本文报道了利用琼脂扩散试验，对湖南省境内21个牛场的奶牛、黄牛和水牛以及一个县农户的水牛进行的牛白血病检查的结果。
A survey of bovine leukemia ( leukosis ) by using an agar gel immunodiffusion test ( ID test ) was carried out among dairy cattle , farm cattle and buffaloes in Hunan province .
水牛县