| S. No. | Cell type | Structure | Functions |
| (i) | Fibroblast | Flatted, large; stellate cell with oval nucleus | They secrete fibres and matrix. |
| (ii) | Macrophages | Large, amoeboid cells with ovoid nucleus; processes are short and branched. | They ingest cell debris, bacteria, foreign matter |
| (iii) | Lymphocytes | Migrated blood cells; small and rounded, moved by pseudopodia. | They ingest cell debris, bacteria, foreign matter and form antibodies. |
| (iv) | Plasma cells | Similar to lymphocytes but large. | Plasma cells produce antibodies. |
| (v) | Mast cells | Occur near blood vessels, lymphatics and nerves; large, round, oval or polygonal cell. | Make histamine, serotonin, heparin. The histamine dilates while serotonin constricts blood vessels. |
| (vi) | Adipose cells | These are specialised fibroblasts with a large droplet of fat; nucleus shifted to one side. | They store fat. |
