Regeneration is a process in which tissue molds itself into an exact replica of an injured or severed part. The regeneration process depends on different factors such as the environment and the development of the organism in question (Br, 1955). Regeneration occurs in several stages and the body must have the capacity to perform each of them for successful regeneration with minimal loss of necessary functions. First, once the wound has been made, muscular contraction closes the wound (Pellettieri et al., 2010). Then a blastema, a group of undifferentiated cells, forms and will differentiate into missing parts. Finally, undifferentiated cells undergo epimorphosis where the lost parts are formed by the blastema (Reddien & Sánchez Alvarado, 2004). One organism well suited to regeneration is Dugesia dorotocephala, more commonly known as black planaria. Planarians are flatworms classified in the phylum Platyhelminthes and are bilaterally symmetrical. They are generally found in freshwater streams and ponds (Br, 1955). Planarians are unique in that they can reproduce both asexually and sexually. Planarians can reproduce asexually by transverse fission. Planarians are also hermaphrodites in which they can reproduce through cross-fertilization. Planarians prefer to reproduce by fission where the organism divides in two and regenerates (Curtis & Schulze, 1933). Past experiments using Dugesia dorotocephala show the ability of planarians to regenerate after dividing the organism into different parts (Sánchez Alvarado, 2006). Planarians with cross sections below the head and above the tail will produce regenerated segments due to the ability of planarians to form neoblasts and undergo epimorphosis to create a new body...... middle of paper......many organs which prove vital for scientists to explore stem cell regeneration in humans (Rink, 2013). The importance of planarian regeneration gives scientists insight into how stem cells can be used for human purposes. Advanced organ regeneration could not only impact planarian livelihoods, but also revolutionize modern medicine. With continued studies focusing on regeneration and stem cells, scientists can try to see how to manipulate totipotent cells found in humans to regenerate into any cell needed throughout the body (Wagner et al., 2012 ). Humans will benefit from advances in regeneration in the face of degenerative diseases that affect the muscular system or major organs necessary for life. Regeneration can help rebuild organs or muscles damaged by infection or disease and change medicine and human health (Salvetti et al.., 2009).