[Study of an alfalfa virus and ultrastructure of the infected leaves].
D007239:Infections / Q000382:microbiology; D000455:Medicago sativa / Q000166:cytology*; D008854:Microscopy, Electron; D010935:Plant Diseases; D010942:Plant Viruses / Q000032:analysis*
Estudio de un virus de la alfalfa y ultraestructura de las hojas infectadas.