title: Detection of influenza virus subtype A by polymerase chain reaction: WHO external quality assessment programme summary analysis, 2013.
mesh_terms: D005838:Genotype; D006801:Humans; D009981:Influenza B virus / Q000302:isolation & purification; D007251:Influenza, Human / Q000821:virology*; D029521:Alphainfluenzavirus / Q000235:genetics / Q000302:isolation & purification*; D007753:Laboratories / Q000592:standards*; D008826:Microbial Sensitivity Tests; D009439:Neuraminidase / Q000037:antagonists & inhibitors; D016133:Polymerase Chain Reaction / Q000592:standards*; D011786:Quality Control; D014944:World Health Organization
chemical_list: D009439:Neuraminidase