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PD-L1 transcript detection across serial dilutions of 4 tumor samples. PD-L1 transcript detection across serial dilutions of 4 tumor samples. Results demonstrate high, moderate, and low PD-L1 expression and can be reliably quantified by a continuous variable of absolute transcript reads. a Sample 1: Melanoma with high expression. b Sample 2: Melanoma with high expression. c Sample 3: RCC with moderate expression. d Sample 4: RCC with moderate expression
