Key

EAS, external anal sphincter SC, simple columnar epithelium StS(k), stratified squamous epithelium (ker-

IAS, internal anal sphincter ST, stratified epithelium atinized)

IG, intestinal glands StC, stratified cuboidal epithelium arrow, termination of muscularis mucosae

LN, lymphatic nodules StCol, stratified columnar epithelium diamonds, junctions between epithelial

Lym, lymphocytes StS, stratified squamous epithelium types

MM, muscularis mucosae

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