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Figure 3. Time-related changes in the percentage incidence of both necrosis ({blacktriangleup}, {Delta}) and vascular abnormalities (•, o) in rat brain after irradiation with 25 Gy of X-rays. For both parameters closed symbols correspond to data from animals receiving Gammaphos prior to exposure; open symbols correspond to data for the group of animals receiving irradiation only. Error bars indicated±standard error.