title: The process of discovery.
authors: Transplantation Infectious Disease Program, Massachusetts General Hospital, Boston 02114, USA.
authors: J A
authors: JA
authors: Fishman
mesh_terms: D000818:Animals; D006801:Humans; D016867:Immunocompromised Host; D012307:Risk Factors; D014183:Transplantation, Heterologous / Q000276:immunology*; D014481:United States; D015047:Zoonoses / Q000635:transmission*