Recent advances in photodynamic diagnosis of gastric cancer using 5-aminolevulinic acid

Figure 4 5-aminolevulinic acid - photodynamic diagnostic imaging of metastatic and non-metastatic lymph nodes[17]. Left column: White-light images; Middle column: Fluorescence images; Right column: Hematoxylin-eosin stained sections. A: Metastatic lymph node; B: Non-metastatic lymph node. Arrows indicate metastatic foci. In the metastatic lymph node, red fluorescence aligns with the metastatic foci. White light and fluorescence images were acquired with the SZX-12 stereomicroscope (Olympus, Tokyo, Japan) equipped with the DP71 color charge-coupled digital camera (Olympus). Excitation: 395-nm to 415-nm; Emission: > 430-nm; Scale bars: 3-mm.