Causes of labored breathing include: 1  Severe metabolic acidosis, particularly diabetic ketoacidosis (DKA) but also renal failure. 2  Cardiac disease. 3  Respiratory failure.
A planarian is one of many flatworms of the Turbellaria class. It is also the common name for a member of the genus Planaria within the family Planariidae.Sometimes it also refers to the genus Dugesia. Planaria are common to many parts of the world, living in both saltwater and freshwater ponds and rivers.n asexual reproduction, the planarian detaches its tail end and each half regrows the lost parts by regeneration, allowing neoblasts (adult stem cells) to divide and differentiate, thus resulting in two worms. Some species of planaria are exclusively asexual, whereas some can reproduce both sexually and asexually.
Brain regeneration. Planarians are known as not only one of the most primitive animals which have a brain, but also as animals that have high regenerative ability. They can regenerate an entire body, including a brain, within 5 days after amputation from a small piece of the body in which no brain tissues remain.n the first study on the organization of the planarian brain, a homolog of the homeobox-containing gene Orthopedia (Otp) from planaria, Djotp, was isolated. Djotp is specifically expressed in the branch structures of the brain (Umesono et al., 1997).