Article 4 Pyrethroids 4 bifenthrin 4 controlled study 4 cypermethrin 4 deltamethrin 4 neurotoxicity 4 nonhuman 4 pyrethroid 4 rat 4 tefluthrin unclassified drug 4 3 (4,5 dimethyl 2 thiazolyl) 2,5 diphenyltetrazolium bromide 2 Animals 2 Astrocytoma 2 Body temperature 2 C6 cells 2 Cell Line, Tumor 2 Cell death 2 Cellular damage 2 Cumulative toxicity 2 Dose-Response Relationship, Drug 2 Insecticides 2 MTT assay 2 Microscopy, Fluorescence 2 Mixture 2 Pyrethrins 2 Rat 2 Rats 2 Subcellular Fractions 2