Scleritis (inflammation of sclera) is a strong indication of the underlying medical problem. It can be due to fungal, viral or parasitic infection, trauma, exposure to chemicals, poisonous gases or due to post-surgical complications.
Mast cells are granulated cells typically found in connective tissue. These cells mediate immune responses to foreign particles. In particular, they release large amounts of histamine and enzymes in response to antigen recognition.
There are four types of cells in these islets, including: 1  Î± alpha cell that secrete glucagon. 2  Î² beta cells that secrete insulin. 3  Î´ delta cells that secrete somatostatin. 4  Î³ gamma cells that secrete pancreatic polypeptide.