A<unk>  is a common set of physiological and behavioral signs that characterize a type of adverse biological response. A<unk> of<unk>  should not be confused with mechanism of<unk> , which refer to the biochemical processes underlying a given<unk> of<unk> .<unk>  are important, widely used tools in ecotoxicology and aquatic toxicology because they classify toxicants or pollutants according to their type of toxic<unk> . There are two major types of<unk> : non-specific<unk> g toxicants and specific<unk> g toxicants. Non-specific<unk> g toxicants are those that produce narcosis, while specific<unk> g toxicants are those that are non-narcotic and that produce a specific<unk>  at a specific target site.
Modes of toxic action
Toxic capacity
Physiological effects in space
Antimicrobial spectrum
Biological half-life
Pain tolerance
Anatomy of an Epidemic
Route of administration