title: Editorial expression of concern.
authors: Bruce
authors: B
authors: Alberts
mesh_terms: D000914:Antibodies, Viral / Q000097:blood; D001769:Blood / Q000821:virology; D045744:Cell Line, Tumor; D015673:Fatigue Syndrome, Chronic / Q000821:virology*; D006801:Humans; D009052:Leukemia Virus, Murine / Q000235:genetics; D011995:Recombination, Genetic; D012192:Retroviridae Infections / Q000821:virology*; D058008:Xenotropic murine leukemia virus-related virus / Q000235:genetics / Q000276:immunology / Q000302:isolation & purification*
chemical_list: D000914:Antibodies, Viral