leica biosystems oracle ventana pathway similarly egfr overexpressed variety cancers including head neck colon immunohistochemistry used determine patients may benefit therapeutic antibodies erbitux cetuximab commercial systems detect egfr immunohistochemistry include dako pharmdx mapping protein expression immunohistochemistry also used general protein profiling provided availability antibodies validated immunohistochemistry human protein atlas displays map protein expression normal human organs tissues combination immunohistochemistry tissue microarrays provides protein expression
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