Fig 3.

Serum tumor marker response. Semi-log graphs of (A) prostate-specific antigen levels from 40 to 5 ng/mL and of (B) prostatic acid phosphatase levels from 10 to 1 ng/mL over time in a specific PROSTVAC-treated patient (PROSTVAC is a vaccine containing two recombinant viral vectors [vaccinia and fowlpox] and three immune costimulatory molecules [B7.1, ICAM-1, and LFA3]). Gold circles represent time points for the samples. The responses occurred over 3 to 6 months (end of study). The patient survived 929 days.