Defined as cells in the first trimester of development. Organ cells which are chosen to correspond with injured host organ. Cells gradually assume morphology and growth processes of the host organism at the appropriate organ site. Injected embryonic organ cells. Enter blood stream of host organism and migrate to appropriate organ site.
Cells assume normal growth process of the host organism.
Neural fibers sprout and gradually develop at injury site. New neural fibers. Develop new neural matrix that forms bridge across injury site. Fibers begin first to receive and transmit sensory data, which requires less specific pathway differentiation than motor pathways. New neural matrix.