kidney glomerulus volume mesangium volume to glomerulus volume ratio mesangial Vv kidney mesangium volume to glomerulus volume ratio PMID:3226452 CMO:0003402 clinical_measurement_ontology kidney fractional mesangial volume renal mesangium volume to glomerulus volume ratio CMO:0003403 2020-05-04T14:39:47Z slaulede Vmes PMID:14993490 mesangial volume density (Vv) A calculated value made by dividing the mesangial fraction volume by the total glomerular volume, both values having been calculated from measurements of microscopic images. ratio of glomerular area occupied by mesangial cells to total glomerular area VT:0005325