Figure 3.
Sunburn is not a useful indicator of immunosuppression in skin types I/II. Skin types I/II (○) were suppressed with doses of SSR that were below the visual threshold for erythema (1 MED). In contrast, skin types III/IV (•) were suppressed with erythemogenic doses of SSR. All skin types were suppressed with a moderate sunburn (2 MED).