Inactivated Nevus Tissue with High Hydrostatic Pressure Treatment Used as a Dermal Substitute after a 28-Day Cryopreservation Period

Figure 7

Transmission electron microscopy images of untreated, fresh, and cryopreserved nevus tissues. The arrowheads indicate the basement membranes. The basal layer of the epidermis is rigidly connected to the surface of dermis in the untreated group, while keratinocytes are destroyed and fragmented into small pieces in the fresh and cryopreserved groups. The lamina densa in the basement membrane is clearly observed among the three groups. D: dermis; E: epidermis.