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ELISA of MAbs 9d8(2a) and 9d8 binding to M. tuberculosis and AM. MAb 9d8(2a) or 9d8 was serially diluted in an ELISA using M. tuberculosis Erdman (A) or purified AM (B). Each value represents the average of three measurements. Error bars show the standard deviations of the means. These growth experiments and the ELISA were repeated twice with similar results. O.D., optical density; MTB, M. tuberculosis; Alk-Phos, alkaline phosphatase.
