Fig. 1

Imaging Results. 1a Sample 29-1a, the top image is the OCT en face image, the bottom image is the histology, the identified gland is boxed in red, scale bar is 1 mm 1b Sample 20–6, TPM image on top, histology on bottom, hemosiderin is circled in red and appears as brown in the histology due to H&E stain, the TPM image is colored based on emission channel, the red represents 690 nm (hemosideran), blue is 500 nm (collagen), scale bar is 1 mm 1c: Sample 34–1 The image on the top left is the single photon microscopy/ wide field fluorescence, very bright spots match with TPM and histology as hemosiderin, the image on the top right is the corresponding TPM image location colored as stated in 1b these are scale to 470 um × 470 um, the bottom right is the full TPM image and bottom left is the corresponding histology, the red box represents the area of the top images, scale bar is 1 mm