Stem cells essential to adaptability Many tissues develop or shrink with use, including muscle, liver and intestine. Human intestines, for example, regrow after portions have been removed due to cancer or injury surgically, and hibernating animals observe their intestines shrink to one-third their regular size during winter. ‘One strategy animals use to deal with environmental variability can be to tune the workings of their organ systems to match the conditions at hand,’ O’Brien said. ‘How specifically this ‘organ adaptation’ occurs, particularly in adult pets that are no developing longer, is definitely a mystery.’ Related StoriesMayo Clinic investigators discover novel mechanism linked to diabetes riskType 2 diabetes drug considerably reduces hospitalizations, death from heart failureObesity groups take aim at says that deny protection of weight problems treatment under affordable care actFollowing the surprising discovery of stem cells in the intestines of fruit flies five years back, O’Brien and Bilder decided to investigate the role of adult stem cells in regular intestinal growth in hopes of finding clues with their function in vertebrates like us.First, softly engage your child in a dialogue about his or her feelings. You may also decide to discuss your concerns with your kids teachers, coaches, school counselors or any additional adults who may find out her or him well. In many circumstances, this alone may be sufficient to begin the process of a sound resolution to the nagging problem. However, the following are some red flags which would indicate that it may be appropriate for your child or adolescent to endure a psychiatric evaluation.