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. 2012 Mar 14;7(3):e33174. doi: 10.1371/journal.pone.0033174

Figure 2. Example of quality analysis for subset of GSE17156: RSV treatment and control groups.

Figure 2

Kernel density plot a) before and b) after removal of samples GSM429279 and GSM429252: blue lines indicate baseline samples, green lines indicate RSV peak symptom samples (∼141 hours); PCA plot c) before and d) after removal of samples GSM429279 and GSM429252 :blue circles indicate control (baseline) samples, green circles indicate RSV peak symptom samples (∼141 hours). Ellipse represents Hotelling T2 alpha threshold of 0.05. Eigenvalues for panel c components 1 and 2 are, respectively, 119335.7 and 50356.11. Eigenvalues for panel d components 1 and 2 are, respectively, 86014.46 and 50705.63.