Alfalfa is the best type of hay for a cavy 苜蓿对天天来说是最好的牧草种类
2.
I propose mary cavy as a candidate for the presidency 我提名玛丽?戴维斯为总裁候选人。
3.
But uh , rat - tat - tat - tat that ass startin static with dre , make way for the ak that i bring as i slang like cavy 熊熊烈火这晚像梦像幻在燃烧把心烧烫谁令我思绪在摇晃默默流汗是你目光
4.
In trpsin tolerance assay . this virus could resist to 1 % trpsis at 37 in an hour . in acid tolerance assay , this virus was resistant to ph3 . 0 and ph5 . 0 at 37 in 2 hours , and the average infection litre of the virus decreased little . in heat assay , at 50 , the virus was processed from 5 minutes to 150 minutes and at each condition the viral virulence reduced to some certain degree . among these conditions , when at 50 in 30 minutes . the average infection litre of this virus decreased over 2 tilre . and when al 50 in an hour , cpe of ihis virus disappeared . when time was set for an hour . but with processed in different temperature as 50 60 70 , 80 , the virus losl the multiplication capacity complelely . in biological assay , we selected different cell lines to cultivate this virus by laking advantage of possesional cells at that time in our laboratory . then we found that fcwf cell line was the most sensitive to dxmv and mdck was the second . with f81 cell line , after passaged for 12 times continuously with low concentration of fcs . the virus could produce cpe . however , with vero cell line . the virus could not procuce any cpe after many passages . the hemagglutination and lumadsorption reaction test proved that this virus had no any reaction to erythrocyte of pig , fowl and cavy . by neutrolizaion assay , dxmv could be identified as a kind of ccv 理化学研究表明，该病毒为rna病毒，对氯仿、乙醚敏感；胰酶试验中，经37 、 1小时处理的病毒，仍然能够在猫源细胞fcwf细胞上生长，并且毒力基本保持不变；耐酸性试验中，病毒分别在ph5 . 0和ph3 . 0经37作用2小时，毒力仅下降一个滴度；耐热性试验中，该病毒在恒定温度50 ，设定不同时间，从5分钟到150分钟，毒力均有不同程度下降，其中， 50作用30分钟，病毒平均滴度下降2个单位； 50 ， 60分钟， cpe消失；恒定时间1小时，设定不同温度( 50 - 60 - 70 - 80 ) ，病毒在细胞上完全丧失增殖能力， cpe消失。生物学试验，利用实验室现有条件，选择不同的细胞系对该病毒进行培养，发现该病毒对猫源细胞fcwf最敏感； mdck细胞次之； f81细胞经多次传代，亦可出现cpe ；而vero细胞则不敏感。血凝试验表明，该病毒对猪、鸡、人及豚鼠的红细胞均无血凝性。
