The removal of particles from the nasopharyngeal (NP) compartment of the respiratory tract by nose blowing and swabbing.
D004781:Environmental Exposure; D006801:Humans; D008722:Methods; D009305:Nasopharynx / Q000032:analysis*; D010316:Particle Size; D011137:Polystyrenes / Q000008:administration & dosage / Q000032:analysis*; D011829:Radiation Dosage; D013667:Technetium / Q000032:analysis; D013997:Time Factors
D011137:Polystyrenes; D013667:Technetium