a. Analyzing the area around the right internal thoracic artery with the beginning of the bifurcation acting as the midpoint of the left side of the 568 × 365 rectangle.
b. Analyzing the area around the right external iliac artery with the 442 × 227 rectangular frame being just above the external iliac artery and the right corner meeting the right common iliac artery.
The images from all four pigs in each group are shown in one horizontal row. There is one pig in the group of native pigs, and one pig in the 120h pigs that did not show results consistent with the others, pointing to likely interindividual variability in the response of the collateral network to SA sacrifice.