Skip to main content
Figure 4 | BMC Bioinformatics

Figure 4

From: Quadratic regression analysis for gene discovery and pattern recognition for non-cyclic short time-course microarray experiments

Figure 4

An illustration of the nine temporal expression patterns identified by the quadratic regression method. The horizontal axis is the log transformation of time. The vertical axis is the hybridization signals obtained from the microarrays. The blue dots are the hybridization signals. The red line or curve is the fitted regression pattern. FLAT stands for no statistically significant differential expression over time detected by the regression method; LU stands for linear up regulated regression pattern; LD stands for linear down regulated regression pattern; QC stands for quadratic concave regulated regression pattern; QV stands for quadratic convex regulated regression pattern; QLCU stands for quadratic linear concave up regulated regression pattern; QLCD stands for quadratic linear concave down regulated regression pattern; QLVU stands for quadratic linear convex up regulated regression pattern; QLVD stands for quadratic linear convex down regulated regression pattern. The corresponding gene symbols are: FLAT. Cldn11; LU. Gba; LD. Col6a3; QC. Rab18; QV. unknown; QLCU. Psmb6; QLCD. Hnrpa2b1; QLVU. Tyrobp; QLVD. Acvr2b.

Back to article page