Keywords: Smallpox CAM.png A photograph revealing smallpox virus pocks on the chorioallantoic membrane of a developing embryonic chick Poxviruses are very easy to isolate and will grow in a variety of cell cultures producing characteristic hemorrhagic pocks on the chick chorioallantoic membrane CAM http //phil cdc gov/phil/details asp ID 2542 1967 CDC/Dr David Kirsh This image is in the public domain and thus free of any copyright restrictions As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image PD-USGov Variola virus |