Accurate detection of glomerular boundaries from WSIs depicting PAS stained renal tissue. (A) Detection of glomeruli in human biopsy sample sourced and prepared in institute-2, with a purple appearance. (B) Detection of human glomeruli sourced from institute-2, prepared in a different institute than (A and C), with a pink appearance. Occasionally, two closely abutting glomeruli will be identified as one doublet object. (C) Detection of human glomeruli sourced from institute-2, prepared in a different institute than (A and B), with reddish-pink appearance. (D) Detection of glomeruli in mouse kidney sections. Scale bars, 400 µm.