Search for ion-cyclotron resonance in an Na(+)-transport system

{
  "study_type": "animal",
  "exposure": {
    "band": "ELF",
    "source": null,
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": "Colonic tissue from turtle (Pseudemys scripta) in an Ussing chamber",
  "sample_size": null,
  "outcomes": [
    "Transepithelial potential difference",
    "Short-circuit current (transepithelial current) changes under ion-cyclotron resonance (ICR) conditions for H+, Li+, Na+, K+, Ca2+, Cl-"
  ],
  "main_findings": "Across AC magnetic-field frequencies from 3 to 770 Hz with simultaneous static (10–220 microT) and time-varying (1–20 microT) magnetic fields, no discernible changes in transepithelial current were observed under tested ion-cyclotron resonance conditions for several ions (H+, Li+, Na+, K+, Ca2+, Cl-).",
  "effect_direction": "no_effect",
  "limitations": [
    "Sample size not reported in abstract",
    "Exposure duration not reported in abstract",
    "Ex vivo tissue preparation (Ussing chamber) may limit generalizability beyond the experimental system"
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "ion-cyclotron resonance",
    "Na+ transport",
    "Ussing chamber",
    "turtle colonic tissue",
    "static magnetic field",
    "time-varying magnetic field",
    "ELF magnetic fields",
    "transepithelial potential",
    "short-circuit current"
  ],
  "suggested_hubs": [
    {
      "slug": "elf-emf",
      "weight": 0.78,
      "reason": "Study tests biological effects of extremely low frequency (3–770 Hz) magnetic fields with a static field component."
    },
    {
      "slug": "ion-cyclotron-resonance",
      "weight": 0.86,
      "reason": "Explicitly investigates ion-cyclotron resonance conditions for multiple ions."
    }
  ]
}