Characterization of TSH-producing BM cells by intracellular TSH staining with anti-CD45 (leukocyte common antigen) and anti-CD11b.

Nearly all BM cells in regions R1, R2, and R3 (described in the legend to Figure 1) that express intracellular TSH are hematopoietic cells (CD45⁺) and not stromal cells (CD45⁻) and are affiliated with a subset of CD11b⁺ cells. Data are representative of 2 experiments.