Secretion of TSH by MACS-sorted CD11b⁺ and CD11b⁻ BM cells.

Cells were cultured as described in “Materials and methods.” Consistent with the findings for intracellular TSH staining (Figure 2), there was a significant increase in TSH produced by CD11b⁺BM cells than CD11b⁻ cells (P < .01) indicating that CD11b⁺cells are a major source of TSH in the BM. Data are mean values ± SEMs of 3 or 5 samples per group.