From: Antitumor efficacy of cytosine deaminase-armed vaccinia virus plus 5-fluorocytosine in colorectal cancers
Days (d)
Plaque assay (PFU/ml)
Intratumoral
Oral gavage
1
8.7 × 103
5.6 × 103
3
1.4 × 104
9.6 × 103
5
2.9 × 105
1.3 × 105
7
7.6 × 103
5.4 × 103
14
3.4 × 103
2.8 × 103
21
1.2 × 104
5.8 × 104