Ground Truth Labelling S1S2 - Proximal Tubule Segments S2S3 - Proximal Tubule Segments TAL - Thick Ascending Limb DCT - Distal Convoluted Tubule CD / CNT - Collecting Duct, Connecting Tubule CD 45 - Leukocytes (broken into 3 subgroups based on unsupervised classification) CD 31 glom - Glomerular endothelial cells CD31 inter - Interstitial endothelial cells Nestin - Podocytes