Fig. 8. Double staining of thyroid tissue from normal BALB/c mice, demonstrating the co-expression of (A) CD11b and (B) TSHß; encircled area demarcates a region of CD11b⁺ cells not containing intracellular TSHß. 18 h post-i.p. injection of green fluorescent microspheres, there is an accumulation of microspheres in regions of high DC/m density in the (C) spleen, despite the absence of microspheres in the (D) thyroid of the same animals.