Fig. 5

Label-free mPAM images of an unstained formalin-fixed mouse lung embedded in a paraffin block and an unstained fresh mouse kidney embedded in an agarose block. a, b Two x–y sections of the mouse lung. c Close-up image of the yellow dashed region in b. A, alveoli; AD, alveolar duct; B, bronchiole; TB, terminal bronchiole. d A x–y section of the mouse kidney. e Close-up image of the red dashed region in d