HISTOLOGY: GASTROINTESTINAL: GI: ESOPHAGUS: STRATIFIED SQUAMOUS EPITHELIUM, NON-KERATINIZING, labeled.; STRATIFIED SQUAMOUS EPITHELIUM, NON-KERATINIZING. A INDICATES THE STRATUM BASALE OR GERMINATIVUM, WHILE B INDICATES THE STRATUM SPINOSUM. THE ARROWS ARE POINTING AT LANGERHANSS CELLS