Photoelectric recording of cellular activity from a television image.
D000818:Animals; D002104:Cadmium; D046508:Culture Techniques; D004553:Electric Conductivity; D001330:Electronic Data Processing; D006321:Heart / Q000187:drug effects; D006339:Heart Rate; D008722:Methods; D008858:Microscopy, Phase-Contrast; D008991:Monitoring, Physiologic; D055095:Optics and Photonics / Q000295:instrumentation; D051381:Rats; D013440:Sulfides; D013690:Television
D013440:Sulfides; D002104:Cadmium