Airway Aggregate
Field emission SEM image of an airway aggregate from an individual who died at the time of the London smog of 1952 that reveals the abundance of ultrafine particulate matter. (Bret Judson)
Field emission SEM image of an airway aggregate from an individual who died at the time of the London smog of 1952 that reveals the abundance of ultrafine particulate matter. (Bret Judson)