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Tag: embryology

Cephalopod Genome Evolution Sheds Light On Symbiotic Organs

By investigating symbiotic organs in cephalopods – octopuses and their kin – researchers have found that there may be many evolutionary paths towards the current forms of organs that host symbiotic microbes. Many animals have specialized symbiotic organs. In humans, the appendix may even be one example, safeguarding beneficial bacteria when the gastrointestinal tract is […]

Human Blood Cells Directly Reprogrammed Into Neural Stem Cells

For the first time, human blood cells have been directly reprogrammed into a previously unknown type of neural stem cell, report scientists from the German Cancer Research Center (DKFZ) and the stem cell institute HI-STEM in Heidelberg. The induced stem cells are similar to those that occur during the early embryonic development of the central […]

Functional 3-D Human Neural Networks Grown From Stem Cells

Three-dimensional human tissue culture models for the central nervous system have been developed by a team of Tufts University-led researchers. The models mimic structural and functional features of the brain and demonstrate neural activity sustained over a period of many months. With the ability to populate a 3-D matrix of silk protein and collagen with […]

Stem Cells Organize Themselves Into Pseudo-embryos

The definitive architecture of the mammalian body is established shortly after implantation of the embryo in the uterus. The antero-posterior, dorso-ventral and medio-lateral axes of the body become organized under the control of gene networks that coordinate the transcription of DNA in various regions of the embryo. Researchers from the University of Geneva (UNIGE), the […]