Table 13

Semiquantitative score of cytotoxic response for BS EN ISO 10993-5 Cytotoxicity Test

Grade
Cytotoxicity/Reactivity
Description of Cytotoxicity/Reactivity Zone

0
None
No detectable zone around or under specimen
1
Slight
Some malformed or degenerated cells
2
Mild
Zone limited to area under specimen
3
Moderate
Zone extends 0.5 to 1.0 cm beyond specimen
4
Severe
Zone extends greater than 1.0 cm beyond specimen but does not involve entire dish

Park et al. Particle and Fibre Toxicology 2007 4:12   doi:10.1186/1743-8977-4-12