Antiviral activity of the Echinacea purpurea extract Echinaforce® against the highly pathogenic avian influenza virus (H7N9)

Planta Medica ◽  
2015 ◽  
Vol 81 (16) ◽  
Author(s):  
R Schoop ◽  
P Stephan ◽  
A Suter
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