Abstract
1. Electron-probe microanalysis shows that corrosion of an 18 per cent chromium-8 per cent nickel-3 per cent molybdenum stainless steel implant and of some pure metal implants may affect not only the surrounding tissues but also the individual cells.
2. Metallic contamination from surgical tools is confirmed.
3. Electron-probe microanalysis is shown to be a useful tool for studying individual biological cells.
4. The principles of electron-probe microanalysis are described.