Pharmacological properties of unc-64 mutants. (A) Aldicarb sensitivity of unc-64 mutants and the wild type. Shown is the percentage of adult animals paralyzed after a 4-h exposure to various concentrations of aldicarb on plates seeded with E. coli wild-type (•), js21(□), e246 (Δ), and unc-29 (○). (B) Levamisole sensitivity of unc-64 mutants and the wild type. Shown is the percentage of adult animals paralyzed after exposure to 100 μM levamisole at various times. Wild-type (•), js21(□), e246 (Δ), and unc-29 (○).