Table 1.
Comparison of crystalline and amorphous forms of various metals and the level at which they were endocytized by cells
| Metal | Mean Particle size (μm) |
Concentration (μg/ml) |
Concentration (μg/cm2 growth area) |
Cells with endocytized particles (%) |
|---|---|---|---|---|
| Crystalline Ni3S2 |
3.75 | 5 | NA | 12.5 |
| 3.75 | 10 | NA | 23.0 | |
| Crystalline NiS | 3.20 | 5 | 2 | 12.5 |
| 3.20 | 10 | 4 | 22 | |
| Amorpous NiS | 3.35 | 5 | NA | .1 |
| 3.35 | 10 | NA | .3 | |
| Amorphous CoS |
2 | 1 | 0.13 | 0.7 |
| 2 | 5 | 0.63 | 0.9 | |
| 2 | 10 | 1.27 | 1.9 | |
| Crystalline CoS2 |
1.25 | 1 | 0.13 | 7.2 |
| 1.25 | 5 | 0.63 | 28.1 | |
| 1.25 | 10 | 1.27 | 49.3 | |
| Amorphous CuS |
0.98 | 1 | 0.13 | 1.6 |
| 0.98 | 10 | 1.27 | 6 | |
| Crystalline CuS | 0.76 | 5 | 0.63 | 21.4 |
| 0.76 | 10 | 1.27 | 43.8 | |
| Amorphoud CdS |
0.64 | 1 | 0.13 | <1 |
| 0.64 | 5 | 0.63 | <1 | |
| Crystalline CdS | 0.64 | 1 | 0.13 | 8.3 |
| 0.64 | 5 | 0.63 | 12.1 |
All cells were CHO cells treated for 24 hours.
Costa et al. 1982 (Co, Cu, and Cd); Costa et al. 1981b (Ni)