id	keyword
ajbspi-34517	cells
ajbspi-34517	issue
ajbspi-34517	volume
ajbspi-34517	epithelium
ajbspi-34517	months
ajbspi-34517	surgery
ajbspi-34517	villi
ajbspi-34517	changes
ajbspi-34517	journal
ajbspi-34517	crypts