Fig. 4: Characteristic femto-SRH images of neoplastic fresh gastroscopic biopsies.

Differentiated carcinomas include: (a) well-differentiated adenocarcinoma, (b) moderately differentiated tubular adenocarcinoma, and (c) differentiated papillary adenocarcinoma with fibrovascular connective tissue cores. Undifferentiated carcinomas include: (d) poorly differentiated adenocarcinoma, and (e) signet ring cell (arrowheads) carcinoma. Scale bars: 50 µm. Source data are provided in the Source data file.