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Exhaled particles

Man is a source of particles. Liquid particles, i.e. droplets, are generated in the respiratory system by humans while breathing, speaking or coughing. There is circumstantial evidence that slow breathing with airway closure produce particles that originate from the terminal bronchioles. These particles may contain information about the medical status of the individual.

we have identified phosphatidylcholineWe have designed, built and utilized a device to collect these particles. So far we have identified phosphatidylcholine, a major component in lung surfactant, some surfactant proteins and also numerous other proteins in the particles. Apart from designing the hardware, our contribution is physical characterisation of the particles, e.g. concentration, number distribution and hygroscopic behaviour.

The project is a cooperation with Occupational and Environmental Medicine, Sahlgrenska Academy at University of Gothenburg.

Staff within this project

  • Helene Holmgren
  • Evert Ljungström
Page Manager: Katleen Burm|Last update: 4/14/2014
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