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    "summary": "The Medical Research Council compared streptomycin plus bed rest with bed rest alone for pulmonary tuberculosis using randomized allocation and concealed assignments. The report made both the treatment comparison and its evaluation method inspectable.",
    "boundary": "This is the evaluation trial, not the discovery of streptomycin. It is not claimed as the first randomized experiment in all history. Drug resistance and the specific trial population limit interpretation; the committee, rather than an invented individual byline, is retained.",
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    "topic": "Life & medicine",
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        "domain": "Clinical trial methodology"
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      "statement": "# The MRC trial: testing streptomycin with controlled allocation\n\nThe Medical Research Council compared streptomycin plus bed rest with bed rest alone for pulmonary tuberculosis using randomized allocation and concealed assignments. The report made both the treatment comparison and its evaluation method inspectable.\n\n## Scientific scope\n\nThis is the evaluation trial, not the discovery of streptomycin. It is not claimed as the first randomized experiment in all history. Drug resistance and the specific trial population limit interpretation; the committee, rather than an invented individual byline, is retained.\n\n## Reading status\n\nThis is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.\n\n## People and systems\n\n\n\nCollectively authored report. Individual author positions are not invented; historical collective attribution is retained in the canonical record.\n\n\n\n## Original sources\n\n- [Streptomycin Treatment of Pulmonary Tuberculosis: A Medical Research Council Investigation](https://doi.org/10.1136/bmj.2.4582.769)\n- [Streptomycin Treatment of Pulmonary Tuberculosis: A Medical Research Council Investigation — deposited bibliography](https://api.crossref.org/works/10.1136%2Fbmj.2.4582.769)\n- [MRC: Streptomycin Treatment of Pulmonary Tuberculosis](https://pmc.ncbi.nlm.nih.gov/articles/PMC2091872/)\n- [James Lind Library: MRC 1948 report and source extracts](https://www.jameslindlibrary.org/medical-research-council-1948b/)\n",
      "summary": "The Medical Research Council compared streptomycin plus bed rest with bed rest alone for pulmonary tuberculosis using randomized allocation and concealed assignments. The report made both the treatment comparison and its evaluation method inspectable.",
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    "title": "The MRC trial: testing streptomycin with controlled allocation",
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    "achievement_state": "SUPPORTED_SCOPED_RESULT",
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    "scope": "The Medical Research Council compared streptomycin plus bed rest with bed rest alone for pulmonary tuberculosis using randomized allocation and concealed assignments. The report made both the treatment comparison and its evaluation method inspectable. Scope limitation: This is the evaluation trial, not the discovery of streptomycin. It is not claimed as the first randomized experiment in all history. Drug resistance and the specific trial population limit interpretation; the committee, rather than an invented individual byline, is retained.",
    "evidence_summary": "Assessment uses the catalogue-linked source evidence for the stated contribution. This is the evaluation trial, not the discovery of streptomycin. It is not claimed as the first randomized experiment in all history. Drug resistance and the specific trial population limit interpretation; the committee, rather than an invented individual byline, is retained.",
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        "title": "Streptomycin Treatment of Pulmonary Tuberculosis: A Medical Research Council Investigation",
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