hyperacute, acute, and chronic

Question 1

hyapreacute

Answer 1

• immediate and rare
• when circulation is reestablished to the graft area, the graft immediately turns white instead of pink. This type of rejection occurs because of a preexisting antibody (type 2) to antigens on the vascular endothelial cells

Question 2

acute

Answer 2

• occurs within days to months after transplantation

- develops an immune response against unmatched HLA antigens after transplantation

Question 3

chronic

Answer 3

• months to years
• slow, progressive organ failure and results from a weak cell-mediated reaction against minor histocompatibility antigens on the grafted tissue