Rejection which may appear within minutes or hours of transplantation is
High-Yield Explanation
Hyperacute RejectionThis form of rejection occurs within minutes or hours after transplantation. It occurs when preformed anti-donor antibodies are present in the circulation of the recipient.Ref: Robbins and Cotran Pathologic Basis of Disease; 9th edition; Chapter 6; Diseases of the Immune System; Page no: 233