DELAYED-TYPE HYPERSENSITIVITY TO A RECOMBINANT MYCOBACTERIAL ANTIGEN, MPB64, IN GUINEA-PIGS SENSITIZED TO MYCOBACTERIUM-TUBERCULOSIS OR MYCOBACTERIUM-BOVIS BCG
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作者:
HAGA, S
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机构:NATL INST HLTH, DEPT BACTERIOL, TOKYO 141, JAPAN
HAGA, S
YAMAGUCHI, R
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机构:NATL INST HLTH, DEPT BACTERIOL, TOKYO 141, JAPAN
YAMAGUCHI, R
NAGAI, S
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机构:NATL INST HLTH, DEPT BACTERIOL, TOKYO 141, JAPAN
NAGAI, S
MATSUO, K
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机构:NATL INST HLTH, DEPT BACTERIOL, TOKYO 141, JAPAN
MATSUO, K
YAMAZAKI, A
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机构:NATL INST HLTH, DEPT BACTERIOL, TOKYO 141, JAPAN
YAMAZAKI, A
NAKAMURA, RM
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机构:NATL INST HLTH, DEPT BACTERIOL, TOKYO 141, JAPAN
NAKAMURA, RM
机构:
[1] NATL INST HLTH, DEPT BACTERIOL, TOKYO 141, JAPAN
[2] AJINOMOTO CO INC, CENT RES LABS, KAWASAKI, KANAGAWA 210, JAPAN
Recombinant MPB64 (rMPB64), a mycobacterial antigen, was obtained from an Escherichia coli clone transformed with a recombinant expression vector, pMAL64c. The rMPB64 was examined for the activity to elicit delayed-type hypersensitivity (DTH) in guinea pigs injected with live Mycobacterium tuberculosis H37Rv or live M. bovis BCG Tokyo. It was found that rMPB64: has the same reactivity as native MPB64 (nMPB64) or MPT64 (nMPT64) and the potency to elicit DTH was 13.4 times higher than that of PPD. Because MPB64 is secreted only by living M. tuberculosis and some strains of BCG, it is possible to use this antigen for the diagnosis of tuberculosis.