Embryonic development or embryogenesis is the process by which the embryo is formed and develops. It starts with the fertilization of the ovum, egg, which, after fertilization, is then called a zygote. The zygote undergoes rapid mitotic divisions, the formation of two exact genetic replicates of the original cell, with no significant growth (a process known as cleavage) and cellular differentiation, leading to development of an embryo.
Scientists at the University of Würzburg have successfully produced human tissues from stem cells. They have a complexity similar to that of normal tissue and are far superior to previous structures.
In Brazil, scientists affiliated with the Human Genome and Stem Cell Research Center (HUG-CELL) at the University of São Paulo (USP) have identified a molecule capable of reducing the aggressiveness of embryonal central nervous system tumors.
Can scrambled eggs unscramble themselves? Well, sort of.
Researchers report they have developed a new technique that uses light to control the lifetime of a protein inside the cell. This method will allow scientists to better observe how specific proteins contribute to health, development and disease.
Some deadly skin cancers may originate in the pigment-making stem cells in hair follicles rather than in skin.
Little is known about the molecular and cellular events that occur during early embryonic development in primate species.
During embryonic development, nerve cells form thin, long extensions, which they use to wire up a complex network, the brain. Scientists from the German Center for Neurodegenerative Diseases in Bonn have now identified a protein that regulates the growth of these extensions by pulling a brake.
A chemical commonly used in consumer and agricultural products to boost the effectiveness of insecticides has been linked to a rare birth defect in mice.
Neural crest cells -- embryonic cells in vertebrates that travel throughout the body and generate many cell types -- have been thought to originate in the ectoderm, the outermost of the three germ layers formed in the earliest stages of embryonic development.
Aging is a process that affects all functions of the human body, particularly brain function. However, aging can be delayed through lifestyle changes (physical exercise, restricting calorie intake, etc.).
During embryonic development, the entire nervous system, the skin and the sensory organs emerge from a single sheet of cells known as the ectoderm. While there have been extensive studies of how this sheet forms all these derivatives, it hasn't been possible to study the process in humans - until now.
Alagille syndrome is a rare pediatric genetic disorder that can affect the liver, heart, kidneys, blood vessels, skeleton and other tissues.
Scientists at Tokyo Institute of Technology observed changes to the gene-regulating factors during zebrafish development and discovered that modifications to "histone H3", one of the proteins around which DNA is bound, play an important role in "zygotic genome activation" or transition of control of zebrafish embryonic development from maternal material to the zygote .
Twenty million Americans suffer from peripheral nerve injuries, which can be caused by traumas such as combat wounds and motorcycle crashes as well as medical disorders including diabetes.
A drug used to treat chronic myeloid leukemia appears to be more effective at stopping a type of medulloblastoma in mouse models than existing treatments for the deadly pediatric brain tumor, reports a multi-institutional team led by researchers at Skaggs School of Pharmacy and Pharmaceutical Sciences at University of California San Diego.
In the body's cells, some proteins are of vital importance as to which genes are active or turned off. Now, researchers from the University of Copenhagen and the Memorial Sloan Kettering Cancer Center have discovered which proteins are necessary in order to maintain the proper genetic regulation.
Scientists at Washington University School of Medicine in St. Louis appear to have solved a decades-long mystery regarding the precise biochemical pathway leading to a fatal genetic disorder in children that results in seizures, developmental regression and death, usually around age 3.
A team headed by Vincent Pasque at his Lab at KU Leuven alongside researchers from the Jean-Christophe Marine lab and the Edith Heard lab have made a significant step towards developing a treatment for Rett syndrome and other X chromosome linked disorders.
After working on stem cells for several years, scientists have now announced that they have found a way to synthesize structures that look like very primitive human embryos. While some hailed the discovery, others questioned the ethical basis of manufacturing synthetic humans.
New research from the University of Maryland and the National Institutes of Health reveals a new role for the enzyme telomerase.