Model features three cancerous conditions: NBC (Nodular Basal Cell), MM (Malignant Melanoma), MBC (Morpheic Basal Cell), and three non-cancerous conditions: DN (Dyplastic Nevi), KA (Keratoaconthoma), AK (Actinic Keratosis) with basal layer and dermal layer cross-section detail. Removable patient education card and base included. Size: 4-1/2" x 4-1/2" x 1-1/4".