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Immunoscreening of recombinant TB antigens by a Western blot assay. Arrows indicate the positions of recombinant antigens on the immunoblots. Each strip was probed with different serum specimens. A strip was probed with anti-RGS His (H) to indicate the position of protein on the blots. The positive control (+) is represented by a strip probed with a known serum specimen which is reactive to the specific recombinant antigen.
