id	keyword
abc-2883	agnps
abc-2883	agno3
abc-2883	concentrations
abc-2883	germination
abc-2883	silver
abc-2883	treatments
abc-2883	medium
abc-2883	seedlings
abc-2883	nanoparticles
abc-2883	tobacco
abc-2883	control
abc-2883	growth
abc-2883	plant
abc-2883	effects
abc-2883	et al
abc-2883	exposure