-81- 



Rao, D. V., P. Shukla, and C. Hiruki. 1978. I_n situ reaction 

 of clover yellow mosaic virus ( CYMV ) inclusion bodies 

 with fluorescent antibodies to CYMV. Phytopatholocy 

 68:1156-1159. 



Robertson, W. M., and I. M. Roberts. 1971. A simple device 

 for the bulk staining and storage of ultrathin sections 

 on grids. J. Microscopy 95:425-428. 



Rossi, G. G. , B. Pauli, H. Luginbuehl , and D. Probst. 1972. 

 Demonstration by electron microscopy of viruses in cells 

 found by light microscopy to contain inclusion bodies. 

 Path. Microbiol. 38:321-332. 



Roth, J. 1983. The colloidal gold marker system for light and 

 electron microscopic cytochemistry. P. 217-284, in: 

 Techniques in Immunocytochemistry Vol. 2, G. R. Bullock 

 and P. Petrusz, eds . Academic Press, New York. 



Roth, J. 1984. The protein A-gold technique for antigen 

 localization in tissue sections by light and electron 

 microscopy. P. 113-121, in: Immunolabelling for Electron 

 Microscopy. J. M. Polak and I. M. Varndell, eds. 

 Elsevier Science Pub. Co. Inc., New York. 



Russo, M. , and G. P. Martelli. 1973. The fine structure of 

 Nicotiana glutinosa L. cells infected with two viruses. 

 Phytopathol . Medit. 12:54-60. 



Russo, M. , and G. P. Martelli. 1981. The fine structure of 



Cymbidium ringspot virus in host tissues. II. Light and 

 electron microscopy of localized infections. J. Ultra- 

 struct. Res. 77:105-118. 



Russo, M. , M. A. Castellano, and G. P. Martelli. 1982. The 

 ultrastructure of broad bean stain and broad bean true 

 mosaic virus infections. J. Submicrosc. Cytol. 14:149- 

 160. 



Sheehan, T. J. 1980. Orchids. P. 133-164, in: Introduction 

 to Floriculture. R. A. Larson, ed . Academic Press, New 

 York. 



Spurr, A. R. 1969. A low viscosity epoxy resin embedding 

 medium for electron microscopy. J. Ultrastruct. Res. 

 26:31-43. 



Wisler, G. C, F. W. Zettler, and D. E. Purcifull. 1982. A 

 serodiagnostic technique for detecting Cymbidium mosaic 

 and Odontoglossum ringspot viruses. Phytopathology 

 72:835-837. 



