A large portion of the lobe represented in the plate has undergone tuberculous changes.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
When an affected lobe is cut through at right angles to its long diameter, the cut surface presents a variety of interesting changes.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
Usually only one side is affected, often but a single lobe, and this most commonly the large or principal lobe.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler