title: Studies on alfalfa mosaic virus. IV. An unusual strain.
mesh_terms: D000042:Absorption; D002499:Centrifugation, Density Gradient; D002586:Cesium; D011232:Chemical Precipitation; D002712:Chlorides; D003956:Dialysis; D007106:Immune Sera; D005779:Immunodiffusion; D008094:Lithium; D008274:Magnesium; D000455:Medicago sativa; D008854:Microscopy, Electron; D010935:Plant Diseases; D010942:Plant Viruses / Q000302:isolation & purification; D010945:Plants, Edible; D010947:Plants, Toxic; D012367:RNA, Viral / Q000302:isolation & purification; D013057:Spectrum Analysis; D013194:Staining and Labeling; D013395:Sucrose; D014026:Nicotiana; D014461:Ultracentrifugation; D014466:Ultraviolet Rays; D014764:Viral Proteins
chemical_list: D002712:Chlorides; D007106:Immune Sera; D012367:RNA, Viral; D014764:Viral Proteins; D002586:Cesium; D013395:Sucrose; D008094:Lithium; D008274:Magnesium