In vitro systems in pneumocystis research.
Most groups involved in Pneumocystis research need large quantities of well preserved, viable Pneumocystis organisms free of host cell contamination. Biological, biochemical, immunological, genetic or other studies on Pneumocystis usually involve the separation of Pneumocystis from lung tissue as well as elimination of host cell debris from parasite extracts. In other investigations, such as transmission, infectivity, life cycle, biochemical, in vitro culture or drug-screening studies, viable and infectious Pneumocystis organisms are urgently required. However, there is no generally accepted methodology for obtaining Pneumocystis from experimental hosts or from human clinical samples; methods are still far from reaching standardization, as discussed here by the members of the European Concerted Action (ECA) on Pneumocystis carinii, which is co-ordinated by Eduardo Dei-Cas and Jean-Charles Cailliez.
Parasitology and Mycology Service of the University Regional Hospital Center and Faculty of Medicine, Lille, France.
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