Clinical Grade
  Grade I/II Grade III/IV
C4d IHC C4d IHC
  H & E status C4d + C4d- Total
n
C4d + C4d- Total n
Colon   Positive 1 0 1 6 1 7
  Negative 6 0 6 4 0 4
Totaln   7 0 7 10 1 11
Skin   Positive 17 10 27 8 2 10
  Negative 2 1 3 0 0 0
Totaln   19 11 30 8 2 10
Table 4: Colon and Skin cases. Comparison of clinical grade, C4d IHC, and H&E status.