Microwave-specific heating affects gene expression.

{
  "study_type": "in_vitro",
  "exposure": {
    "band": "microwave",
    "source": null,
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": "Escherichia coli",
  "sample_size": null,
  "outcomes": [
    "beta-galactosidase expression",
    "gene expression"
  ],
  "main_findings": "In Escherichia coli, low-level microwave radiation increased beta-galactosidase expression; this increase was not reproduced by bulk heating. The effect was not frequency dependent and was interpreted as due to microwave-specific heating effects (small thermal gradients).",
  "effect_direction": "mixed",
  "limitations": [
    "Frequency, SAR, and exposure duration were not reported in the abstract.",
    "Sample size and experimental details are not provided in the abstract.",
    "Findings are from an in vitro bacterial model; generalizability to other systems is not addressed in the abstract."
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "microwave radiation",
    "non-ionizing radiation",
    "thermal gradients",
    "microwave-specific heating",
    "Escherichia coli",
    "beta-galactosidase",
    "gene expression"
  ],
  "suggested_hubs": []
}