Figure 3

Figure 3

Survival of Epstein-Barr virus transformed B cells after irradiation with UVB. Results are expressed as % of the incorporation of 3H-thymidine three days after irradiation. The results of our patient are shown together with those from cell strains from three normal controls (WW2, SS, 11224). These results illustrate the marked sensitivity to UVB light, with only 1% of cells surviving 100 J/sq m as compared to doses of 250 J/sq m and over required to achieve similar survival rates in the control cells.