id	keyword
flmnh-234	animals
flmnh-234	ms-222
flmnh-234	ammonia
flmnh-234	nitrogen
flmnh-234	control
flmnh-234	treatment
flmnh-234	water
flmnh-234	xenopus
flmnh-234	food
flmnh-234	group
flmnh-234	amphibians
flmnh-234	use