Fig. 7. Bone marrow-derived dendritic cells (DCs) generated in vitro migrate to the thyroid. Bone marrow cells from EGFP⁺ mice grown with 10 ng ml^–1 GM-CSF express high levels of (A) CD11b, of which (B) 40% expressed CD11c. (C–F) Unstained thyroid tissue sections from non-irradiated EGFP^– recipient mice 25 days post-DC transfer indicate the presence of EGFP⁺ intrathyroidal cells. Magnification 400x.