Figure 1From: Microarray amplification bias: loss of 30% differentially expressed genes due to long probe – poly(A)-tail distancesElectropherograms of microdissected RNA samples. Beside the marker (left peak) the 18 and 28S peaks are visible. For all samples the 28S is higher than the 18S peak, indicating good quality RNA. A, T1, ratio 28S/18S = 1.9; B, T2, ratio 28S/18S = 1.9; C, B, ratio 28S/18S = 1.8.Back to article page