FIG. 9.

Activity of donor neurons. (A) Cross-section through a SD-derived transplant, where dashed lines indicate the donor-host border. Immunohistochemical labeling of cfos demonstrates high degree of neuronal activity within the transplant, indicated by a large number of labeled nuclei (B). Multi-unit recordings of donor neuron activity revealed a bursting pattern (blue) correlated to phrenic motor output (green, C). Both integrated (top) and raw (bottom) activities are shown for each recording site. Scales are as indicated. Color image is available online at www.liebertpub.com/neu