id	keyword
ajpf-692	pigs
ajpf-692	transportation
ajpf-692	control
ajpf-692	experimental
ajpf-692	road
ajpf-692	value
ajpf-692	stress
ajpf-692	journey
ajpf-692	control pigs
ajpf-692	vet
ajpf-692	increase
ajpf-692	acid
ajpf-692	serum