Peripheral blood is a source of easy access to mononuclear dendritic cell precursors. Cord blood is another source of mononuclear dendritic cell precursors. Mononuclear dendritic cell precursors can be isolated from a variety of organisms that can elicit an immune response. These organisms include animals, including, for example, human and non-human animals, such as primates, mammals (including dogs, cats, mice, and rats), birds (including chickens), and their transgenic species.
I ran across this info AVII77 shared when a poster put up NWBO's permit application for planned use and development and I just had to smile because I knew what it meant.