Technique for the purification of the hyphae of Filobasidiella neoformans

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Abstract
A technique for the purification of the hyphae ofFilobasidiella neoformans is described. Cultural conditions and strains for maximal hyphal production were determined. Blastospores were separated from hyphae by sonification of mycelial suspensions. Following this, the initial density ranges of all cell types were determined by isopycnic centrifugation, using Renografin-60 as a supporting medium. Based on these data, rate centrifugation with different density ranges was used to obtain cell separation. The final percentage of non-hyphal cells to total population was 0.007%. These were determined to be still viable at the end of separation.