Histamine is secreted by:
1. | Mast cells | 2. | Fibroblast |
3. | Histiocytes | 4. | Plasma cells |
During injury, mast cells secrete:
1. Histamine
2. Heparin
3. Prothrombin
4. Antibodies
Mast cells of connective tissue contain:
1. Heparin and histamine
2. Heparin and calcitonin
3. Serotonin and melanin
4. Vasopressin and relaxin