In medicine,<unk>  was used as a prognostic factor in melanoma of the skin. It is a description of how deeply tumor cells have invaded. Currently, the standard<unk>  has been replaced by the AJCC depth, in the AJCC staging system of melanoma. Originally,<unk>  was divided into 5 stages.
Breslow's depth
Krogh length
Talairach coordinates
Traube's space
Fowler's position
Pimenta's point
Equivalent air depth
Pocock boundary