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. 2006 May 22;6:14. doi: 10.1186/1475-2867-6-14

Figure 6.

Figure 6

Comparison of CAL27 density-dependent proliferation to low density CAL27-HPV16 in vitro. CAL27 cells plated at high density (A:2) proliferated more rapidly than those plated at low density (A:1) without serum (NS) by day 2. Cal27 cells plated at high density (B:2) also proliferated more rapidly than those plated at low density (B:1) with fetal bovine serum (FBS) by day 2. Low density proliferation of CAL27 (A:3; B:3) was increased by transfection with HPV16 (A:4-NS, B:4-FBS) to levels that approximated high density proliferation. A,B 1,3,4 = LD (low density), A,B 2 = HD (high density), A,B 4 = HPV16TF (transfected).