Enlarged cross-section model features three cancerous conditions; NBC (Nodular Basal Cell), MM Malignant Melanoma, MBC (Morpheic Basal Cell) and three non-cancerous conditions; DN (Dysplastic Nevi), KA (Keratoacanthoma), AK (Actinic Keratosis) with basal layer and dermal layer cross-section detail. Skin cancer anatomy model size: 4" dia. x 1-1/4" Card size: 6-1/2" x 5-1/4" 5" x 6" x 1" White Base included with every model. Made of durable high quality materials.