Table 1. Glossary of Terms.

Reference slide	Digitized slide on which annotations are drawn
IHC slide	Digitized IHC-stained slide (adjacent section relative to reference slide)
IHC score	Quantified IHC data at a single grid region of an image
IHC map	2D representation of IHC scores across an IHC slide
IHC signature score	Multiple IHC scores summated to represent quantified IHC data at a single grid region of an image
IHC signature map	Multiple IHC scores representing n-gene protein expression across the annotation area of the reference slide