No abstract

We thank William Styer, Marian Coffey, Lakshman Negi, and Julie Yee for assistance in identifying pathogens; D. M. Joshi for purifying they -globulins for the enzyme-linked immunosorbent assay; Dwight M. DeLong, Charles Triplehorn, and Lois O'Brien for insect identification; E. J. Guthrie for supplying antiserum to maize stripe virus; C. L. Niblett for antiserum to maize chlorotic mottle virus; and R. E. Whitmoyer, Elke Kretzschmar, and Fran Butts of the Service Electron Microscope Laboratory of the OARDC for assistance in identifying the morphology of particles from centrifuged sucrose gradients. We especially thank Ricardo Sevilla P.

No abstract

No abstract