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. 2019 Apr 10;7:e6335. doi: 10.7717/peerj.6335

Figure 1. Example of the positive (A) and negative (B) patches of a training image set.

Figure 1

It is evident that the positive cells have varying morphology and also show varying staining intensity, from dark to light brown, whereas the negative class is highly variable, involving erythrocytes, anthracotic pigment, hematoxylin, diffuse stain traces and others.