At 5 cm, the axolotl's skin consisted of an epidermis with keratinocytes and a thin, fibroblast-free collagen layer in the dermis, which they named the stratum coniunctum. As the axolotl grew ...

The sudden shearing forces associated with the impact rupture blood vessels in the papillary dermis with consequent leakage of blood into the epidermis. While in the stratum corneum, this blood is ...

The stratum corneum is very thin ... Each bump consists of epidermis with the dermis underneath it and is known as a papilla. The papilli grow upward but become lopsided and flattened because the ...