ATL" stands for "Above The Line", meaning that the advertising is going to be deployed around a wider target audience, e.g. television (TVC), radio, or billboards. ... "BTL", or "Below The Line", suggests that the advertising is going to target a specific group of potential consumers.
Silver nitrate is a natural compound that is used as an antiinfective agent. Silver nitrate topical (for use on the skin) is used to cauterize infected tissues around a skin wound. Silver nitrate can also help create a scab to help stop bleeding from a minor skin wound.
The main toxic effect of topical silver nitrate is a generalized gray pigmentation of the skin called argyria. ... Silver nitrate is mainly considered a poison with ingestion due to the corrosive nature of the compound. If ingested, silver nitrate can cause potentially fatal gastroenteritis and gastrointestinal bleed.