![]() | Only 14 pages are availabe for public view |
Abstract At the present study the following points were conducted : 1-Isolation and identification of the casual viruses. 2-Biological relationship between virus and vector of PVY. 3-Effect of single virus and mixed infection. 4-Inhibition effect of some natural materials on the isolated viruses. 5-Effect of some dairy products on the isolated viruses. |