Figure 7From: A novel procedure for the quantitative analysis of metabolites, storage products and transcripts of laser microdissected seed tissues of Brassica napusTranscript analysis. Closeness of expression signals obtained after microarray hybridisation of conventionally extracted total RNA and amplified RNA samples of conventional, column-based and bead-based extraction methods. (a &c) Electropherograms reflecting quality of total RNA, isolated with RNeasy® (a) and mRNA, isolated with Dynabeads® (c) from a 20 μm seed cryosection (43. DAF). (b &d) Electropherograms of mRNA from the same samples (a/c) after 2 rounds of amplification. (e) Portions of signal intensities obtained from each hybridisation and divided into six groups. Y-axis represent % of observation. (f) Scatterplots comparing log2-transformed means of expression signals from the different sample treatments. Means are filtered against low signal intensities (≤ 10) and high coefficients of variation (≥ 20%).Back to article page