AN ELECTRON MICROSCOPE STUDY ON THE SIZE OF SAMMONS' OPUNTIA VIRUS.
D004583:Electrons; D006652:Histological Techniques; D008853:Microscopy; D008854:Microscopy, Electron; D029747:Opuntia; D010942:Plant Viruses; D012106:Research; D014780:Viruses
EXPERIMENTAL LAB STUDY; HISTOLOGICAL TECHNICS; MICROSCOPY, ELECTRON; PLANT VIRUSES