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Professional
Consumer
MSD Manual
Consumer Version
HEALTH TOPICS
ZOONOTIC DISEASES
HEALTHY LIVING
SYMPTOMS
EMERGENCIES
DRUG INFO
RESOURCES
COMMENTARY
ABOUT US
HEALTH TOPICS
ZOONOTIC DISEASES
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Anatomical Drawings
Digestive System
Full Review:
May 2023
By
The Manual's Editorial Staff
Last updated: Sept 2026
v848946
VIEW PROFESSIONAL VERSION
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