Fibers/Hyphae
How did those fibers get on that Isospora slide?
http://lymebusters.proboards39.com/index.cgi?action=display&board=rash&thread=9655&page=1#106251106251
http://lymebusters.proboards39.com/index.cgi?action=display&board=rash&thread=9655&page=1#106251106251