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Levels of titanium in left, right, and middle lobes of the liver taken from minipigs treated with sunscreen formulations containing the following TiO2 (from left to right): control, no TiO2 (open bar); submicron (grey bar); uncoated nano (hashed bar); and coated nano (filled bar). The “combined” group represents the average value for liver samples for each animal in the indicated treatment group. Data are presented as mean ± SE for three minipigs per group.
