Anti-viral properties and mode of action of standardized Echinacea purpurea extract against highly pathogenic avian Influenza virus (H5N1, H7N7) and swine-origin H1N1 (S-OIV)
2011 ◽
Vol 5
(5)
◽
pp. 365-372
◽
2009 ◽
Vol 56
(3)
◽
pp. 57-72
◽