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. 2016 Aug 9;4:e2318. doi: 10.7717/peerj.2318

Figure 4. Regression analysis supports nine molecular stages of lung development.

Figure 4

Each set of colored bars represents the least square means of the stage effects for principal components 1–3. A summary of annotation enrichment categories are shown for the positive and negative characteristic gene sets from each component (complete results provided in Data S6).