- Immunohistochemical detection of peste des petits ruminants viral antigen in formalin-fixed, paraffin-embedded tissues from cases of naturally occurring infection. Eligulashvili, R., Perl, S., Stram, Y., Friedgut, O., Scheichat, N., Samina, I., Trainin, Z. J. Vet. Diagn. Invest. (1999)