Fig 1. Fibrotic stromal types in different subtypes of breast cancer.

(A) Maturation of breast cancer stroma. Scale bar: 50 μm. (B) Distributions of stromal types in different molecular subtypes of breast cancer. The number in the histogram bar indicated the number of cases. Multiple comparison among different molecular subtypes was performed by Pearson χ² test. (C) Differences between each other of stromal types constitution among seven molecular subtypes indicated by p values. The blue to red gradient ramp indicates a p value from 1 to 0.001. The comparison between each molecular subtype was conducted by Pearson χ² test and corrected by Bonferroni correction. Because of 21 comparisons between each other among seven molecular subtypes, differences were considered significant when the Bonferroni correction p value less than 0.0024 (0.05/21).