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ANN ARBOR, Mich. -- Without a doctor or dentist's guidance, some parents don't follow national recommendations for early dental care for their children, a new national poll finds.

One in 6 parents who did not receive advice from a health care provider believed children should delay dentist visits until age 4 or older - years later than what experts recommend - according to this month's C.S. Mott Children's Hospital National Poll on Children's Health.

WASHINGTON, D.C., February 18, 2018 -- Cell division is an intricately choreographed ballet of proteins and molecules that divide the cell. During mitosis, microtubule-organizing centers (MTOCs) assemble the spindle fibers that separate the copying chromosomes of DNA. While scientists are familiar with MTOCs' existence and the role they play in cell division, their actual physical structure remains poorly understood.

WASHINGTON, D.C., Feb. 18, 2018 -- Protein systems, such as Ras, make up the complex signaling pathways that control whether a cell divides or, in some cases, becomes cancerous and metastasizes into other regions of the body. For example, 98 percent of pancreatic cancers show Ras protein mutations.

Focusing on their personal DNA and genealogies, middle school students appear to have learned as much as their peers who used case studies, according to a Penn State researcher.

"We noticed that both groups got the content, but once all was said and done, the case study group would have preferred to do the work on themselves," said Elizabeth Wright, postdoctoral scholar working with Nina Jablonski, Evan Pugh Professor of Anthropology, Penn State.

AUSTIN, Tex -- It's not rare that a baby experiences a stroke around the time it is born. Birth is hard on the brain, as is the change in blood circulation from the mother to the neonate. At least 1 in 4,000 babies are affected shortly before, during, or after birth.

Aurora, Colo. (Feb. 16, 2018) - Researchers at Children's Hospital Colorado (Children's Colorado) have completed the first-ever EXIT (Ex Utero Intrapartum Treatment) to ventricular pacing procedure. The patient, a 36-week fetus, who suffered from complete atrioventricular block (CAVB) and cardiac dysfunction, was at high risk of dying before delivery.

AUSTIN - (Feb. 16, 2018) - Scientists have successfully used gene editing to repair 20 to 40 percent of stem and progenitor cells taken from the peripheral blood of patients with sickle cell disease, according to Rice University bioengineer Gang Bao.

Bao, in collaboration with Baylor College of Medicine, Texas Children's Hospital and Stanford University, is working to find a cure for the hereditary disease. A single DNA mutation causes the body to make sticky, crescent-shaped red blood cells that contain abnormal hemoglobin and can block blood flow in limbs and organs.

Put 50 newborn worms in 50 separate containers, and they'll all start looking for food at roughly the same time. Like members of other species, microscopic C. elegans roundworms tend to act like other individuals their own age.

It turns out that the innate system that controls age-appropriate behavior in a developing worm is not entirely dependable, however. Despite sharing identical genes and growing up in similar environments, some individual worms will inevitably march to the beat of their own drum.

COLUMBUS, OHIO - A clinically relevant "liquid biopsy" test can be used to profile cancer genomes from blood and predict survival outcomes for patients with metastatic triple negative breast cancer (TNBC), according to new research published by a multi-institutional team of researchers with The Ohio State University Comprehensive Cancer Center -- Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC - James), the Dana-Farber Cancer Institute and the Broad Institute of MIT and Harvard.

Boston, MA (February 16, 2018) - Increasing evidence has linked autism spectrum disorder (ASD) with dysfunction of the brain's cerebellum, but the details have been unclear. In a new study, researchers at Boston Children's Hospital used stem cell technology to create cerebellar cells known as Purkinje cells from patients with tuberous sclerosis complex (TSC), a genetic syndrome that often includes ASD-like features. In the lab, the cells showed several characteristics that may help explain how ASD develops at the molecular level.