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Propagation of dengue virus type 2 (New Guinea C strain) was performed using a shaker culture of baby hamster kidney cells (BHK-21) cultivated in serum-free modified Waymouth medium. Maximum virus titer varied from 108·3 to 108·8 plaque forming units/ml after incubation of BHK-21 cells in suspension culture at 37°C for 4048 hours post-infection.
Accepted for publication May 5, 1979.
* This investigation was supported in part by U.S. Public Health Service Research Grant HL 08214 from the Program Project Branch, Extramural Programs, National Heart, Lung and Blood Institute; and by The Hormel Foundation.
Permanent address: Polish Academy of Sciences, Institute of Oceanology, Sopot, Poland.
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