Apparatus for Change of Medium in Extracellular Maintenance in vitro of an Intracellular Parasite (Malaria)

Summary A special flask and mechanical equipment are described which provide for automatic removal at a desired time of old culture fluid and addition of fresh medium to cultures in which extracellular malaria parasites (P. lophurae) are attached as a scum to a thin plasma clot lining the wall of the flask.