has part has part has_part characteristic of has modifier foam cell abnormal cell morphology abnormal foam cell morphology any structural anomaly of a cell with a vacuolated appearance due to abnormal deposition and retention of lipoproteins, and typically seen in atherolosclerotic lesions, as well as other conditions, and derived from or related to the group of cells having the ability to take up and sequester inert particles and vital dyes, including macrophages and macrophage precursors, specialized endothelial cells lining the sinusoids of the liver, spleen, and bone marrow, and macrophages of lymphatic tissue and fibroblasts of bone marrow MPheno.ontology MP:0009840 morphology abnormal