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
◽