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Approach to the Esophagus duration 4 minutes 22 seconds Approach to the Esophagus Approach to the Esophagus	Approach to the Esophagus Normal Histology of the Esophagus esophagus mucosa epithelium acid muscle presence squaouspithelium infection eosinophils reflux response portion submucosa basal vessels blood lamin layers pathologies lots From Mary Sanders 139 plays 0
Lecture 21_Early brain development duration 1 hour 11 minutes Lecture 21_Early brain development Lecture 21_Early brain development	Lecture 21_Early brain development Default Description cells cell neurons differentiation gene brain plate expression stem cord tube process acid embryo layer factors signals rhombencephalon stage layers From Natale Sciolino 233 plays 0