It is characterized by a distention of the skin with air or gas contained in the subcutaneous areolar tissue.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
It is covered by epidermis and attached to the underlying parts by a layer of areolar tissue, which usually contains fat.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
Second, by diffused inflammation of the areolar tissue, gangrene, and extensive sloughing.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler