William Brad Barbazuk

Humans and most other mammals cannot regenerate their tissues. Following some form of damage such as a skin wound or a heart attack, fibrosis sets in and instead of replacing cells and tissues, a scar forms. Preventing scarring is thus the fundamental mechanism by which regeneration can be induced in normally non-regenerating mammals. Incredibly, spiny mice heal wounds in a regenerative manner without producing scar tissue, and regrow hairs, glands and dermis.