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Table 2 Semi-quantitative immunohistochemical staining for MDR1 stratified by tumor type

From: Correlation of 99mTc-sestamibi uptake in renal masses with mitochondrial content and multi-drug resistance pump expression

  MDR1 staining
Tumor type 0 1+ 2+ 3+
Clear cell RCC 1 (4%) 7 (27%) 8 (31%) 10 (38%)
Papillary RCC 0 (0%) 0 (0%) 4 (50%) 4 (50%)
Clear cell papillary RCC 0 (0%) 1 (50%) 0 (0%) 1 (50%)
Chromophobe RCC 3 (75%) 1 (25%) 0 (0%) 0 (0%)
Oncocytoma 1 (17%) 4 (67%) 0 (0%) 1 (17%)
HOCT 1 (50%) 1 (50%) 0 (0%) 0 (0%)