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. Author manuscript; available in PMC: 2015 Dec 16.
Published in final edited form as: Parasitol Res. 2014 Jan 24;113(4):1305–1311. doi: 10.1007/s00436-014-3769-0

Fig. 1.

Fig. 1

Flowchart of testing for serum antibodies to Balamuthia mandrillaris among landscapers and blood donors, Southern Arizona, USA, 2010.

aDefined as absorbance value ≥ mean + 2 standard deviations of negative control sera

bImmunofluorescence assay (IFA) titer ≥ 1:64 (designated as seropositive)