title: To help and help not.
authors.forename: Dirk
authors.initials: D
authors.lastname: Homann
authors.forename: Ronald G
authors.initials: RG
authors.lastname: Gill
mesh_terms: D000818:Animals; D001402:B-Lymphocytes / Q000276:immunology*; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology*; D006801:Humans; D008213:Lymphocyte Activation / Q000276:immunology; D014611:Vaccination; D014777:Virus Diseases / Q000276:immunology*