A study of the ultrastructure of the buffalo pox virus

Buffalo pox virus (strain BP 4) has been studied by electron microscopy of sections of infected chorioallantoic membrane cells. The ultrastructure of the virus has been described and compared with the ultrastructure of vaccinia virus. No differences between the two viruses were found. In relation to the ways of release two forms of mature virions have been described. These are probably analogous to the previously described C- and M-form of vaccinia.