title: The role of Helen Purdy Beale in the early development of plant serology and virology.
authors.affiliation: Department of Plant Pathology and Microbiology, Texas A&M University, College Station, Texas 77843-2132, USA.
authors.forename: Karen-Beth G
authors.initials: KB
authors.lastname: Scholthof
authors.forename: Paul D
authors.initials: PD
authors.lastname: Peterson
mesh_terms: D049673:History, 20th Century; D010935:Plant Diseases / Q000821:virology; D010942:Plant Viruses / Q000472:pathogenicity*; D010944:Plants / Q000821:virology*; D012106:Research / Q000266:history; D014481:United States; D014773:Virology / Q000266:history