Failure in directed movement in response to sodium acetate. In C. elegans, sodium acetate is an attractant. Sodium acetate has also subsequently been used to assay for Na+ attraction in C. elegans.
Animals die during embryonic development. In C. elegans, often assayed as refractile eggs that fail to hatch; when applied to large-scale RNAi screens in C. elegans, more than 10% of embryos die.
Failure in directed movement in response to ammonium chloride compared to control. In C. elegans, NH4Cl is an attractant. NH4Cl has also subsequently been used to assay for Cl- attraction in C. elegans.