D-Dimers and fibrinogen levels were measured before and after transplantation in artery patch (A) and heart (B) xenograft recipients. Plasma samples were collected before transplantation (Pre-Tx), and 4D (4 days), 1W (1 week), 1M (1 month), 2M (2 months), or 3M and 4M (3 and 4 months) (when available) after transplantation. D-Dimers were measured in μg/mL. Fibrinogen levels were measured in mg/dL.