| A | B |
|---|
| Mesothelial cells | Normal in serous fluid. Fried egg appearance. May be in singles, pairs, or sheets. Abundant basophilic cytoplasm with frayed borders. |
| Synovial cells | Secrete a mucopolysaccharide which contains hyaluronic acid |
| Histocytes (Macrophages) | Found in normal fluids. Abundant colorless cytoplasm. May have vacuoles and ingested matter. Eccentric nucleus with delicate chromatin. |
| Malignant cells | Abnormal. Variation in size. Irregular in shape. Tend to fuse. Nuclear molding. May have mitotic figures. |
| Lymphocytes, Monocytes, Ependymal cells, Choroid plexus cells | Normal cells in CSF |
| Lymphocytes, Monocytes/Histiocytes, Mesothelial cells | Normal cells in serous fluid |
| Lymphs, Monocytes/Histiocytes/Synovial cells | Normal cells in synovial fluid |
| RBCs, Neutrophils, Eosinophils, Basophils, Siderophages, Blasts, Malignant cells | Abnormal cells in CSF |
