Figure 1.

Cancer vaccine trials started per year. The number of trials started each year is shown. Bars represent the total number of trials started for a particular year. The color code on each bar represents the phase of the trials (green: phase 1; yellow: phase 2; red: phase 3; grey: unspecified).

Cao et al. Immunome Research 2008 4:7   doi:10.1186/1745-7580-4-7
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