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. 2017 Aug 5;16:314. doi: 10.1186/s12936-017-1958-x

Fig. 3.

Fig. 3

Reference reagent 10/198 detects recombinant PpCSP in ELISA. Serum dilution (Log) vs absorbance (AU) was measured for 10/198 and three unknown samples by ELISA with PpCSP as the coating antigen. Each ampoule of 10/198 contains 100 Units as assigned unitage. Parallel line analysis of the data presented in a was used to derive the unitage assigned in test samples (b)