The right knee joint of rabbits were depilated and embrocated with Zhuang jin ye group or vehicle group once per day. There was no special treatment in the normal control and the model control group.

正常對(duì)照組及模型對(duì)照組不作處理久久精品国产一区二区三区，壯筋涂膜液組將壯筋涂膜液涂布于已脫毛的患膝局部，每日一次国内外激情视频网，賦形劑組將不含藥的涂膜液基質(zhì)涂布于已脫毛的患膝局部一级大片黄，每日一次。

The causative agent of the disease is an Corona virus, infectious bronchitis virus IBV）, classified as Corona .Present vaccines for IB are all modified live viruses derived either by sequential passage embrocated chicken eggs. As Immunogenicity of IBV is usually correlated with its virulence, almost all modified live IB vaccines remained insufficient attenuation and have shown a variety of side effects including spread of vaccine virus to no vaccinates, occurrence of long term "carrier" birds, and increasing virulence during in vivo passage.

目前國(guó)內(nèi)外預(yù)防本病所用的疫苗大多數(shù)是弱毒疫苗久久精久久精久久精99，但現(xiàn)用弱毒疫苗都存在以下缺點(diǎn)：（1）與IBV強(qiáng)毒一樣一级精品一区视频在线观看，其弱毒疫苗株也能引起潛伏感染，潛伏感染的雞將終生帶毒人人大香草av淘宝av线路一；（2）疫苗病毒可以由接種雞傳染給非接種雞视频久久这里，在雞群之間傳播過(guò)程中毒力會(huì)返強(qiáng)，從而成為新的感染源亚洲免费一区在线；（3）傳染性支氣管炎病毒極易發(fā)生變異2020av天堂在线，且易成為病毒重組的供體和受體，給使用IB傳統(tǒng)疫苗預(yù)防和根除IB帶來(lái)極大的困難99r热久久。