Further examination of T&NK functions showed that CD4+, CD8+, proliferating Τ cells, Tregs, and NK cells might be involved in the activation of myeloid adhesion, differentiation, immunity, migration, and proliferation; thus we investigated whether myeloid cells play a more crucial anti-tumor role in MTC (Fig. 12c). This evidence concerns the gene CD8A and medullary thyroid gland carcinoma.