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(biology) The conversion of one type of tissue into another.

Micrograph of a gastro-esophageal junction with pancreatic acinar metaplasia. The esophageal mucosa (stratified squamous epithelium) is seen on the right. The gastric mucosa (simple columnar epithelium) is seen on the left. The metaplastic epithelium is at the junction (center of image) and has an intensely eosinophilic (bright pink) cytoplasm. H&E stain.

(biology) The conversion of one type of tissue into another.

A micrograph of intestinalized epithelium in Barrett's esophagus.

(biology) The conversion of one type of tissue into another.

Micrograph showing apocrine metaplasia of the breast with typical features H&E stain.