A resident monocyte that is Gr-1 high, CD43-negative, CX3CR1-negative, CD115-positive, and B220-negative. [ http://www.ncbi.nlm.nih.gov/pubmed/8890901 http://www.immgen.org/index_content.html http://www.ncbi.nlm.nih.gov/pubmed/20628149 GOC:tfm ]