CD14 and Miyoshi myopathy: However, in the MM bone marrow microenvironment an increase in pro-osteoclastogenic factors, produced by the different cell types, such as stromal cells, lymphocytes, and other cells with an immunological role, contributes to enhance the formation of OCs, favoring the recruitment of various OC progenitors, including dendritic cells and CD14+CD16+ monocytes (7, 8).