Fig. 4.

Representative OCT images of (a) fingertip and (b) pig esophagus with the 22-gauge OCT needle slid on the tissue surface. SD: sweat duct; SC: stratum corneum; D: sermis; E: spithelium; LP: lamina propria; MM: luscularis mucosae.

Representative OCT images of (a) fingertip and (b) pig esophagus with the 22-gauge OCT needle slid on the tissue surface. SD: sweat duct; SC: stratum corneum; D: sermis; E: spithelium; LP: lamina propria; MM: luscularis mucosae.