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Aged control (A, B) and GA (C, D) whole mount choroids immunolabeled with UEA lectin (blue) and anti-tryptase (red). MC degranulation near the border region of RPE atrophy demonstrates the association between MC degranulation and choriocapillaris atrophy. The free tryptase+ granules were at the level of the inner aspect of the choriocapillaris as determined in z stacks. Scale bar: 30 μm.
