A tissue-resident macrophage of the renal glomerular mesangium involved in the disposal and degradation of filtration residues, presentation of antigen to T cells and in tissue remodeling. [ http://www.ncbi.nlm.nih.gov/pubmed/1600140 http://openisbn.com/search.php?q=0702022918&isbn=1/ http://openisbn.com/search.php?q=3540536663&isbn=1/ GOC:tfm GOC:add http://www.ncbi.nlm.nih.gov/pubmed/16146841 ]