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.
Early development of an embryo is solely supported by maternally deposited RNAs and proteins until its own genome is activated through a process called zygotic genome activation (ZGA).
In 2017, the single-celled species Chromosphaera perkinsii was found in maritime sediments in Hawaii. More than a billion years ago, long before the first animals appeared on Earth, the earliest indications of its existence were found.
Chromosphaera perkinsii is a single-celled species discovered in 2017 in marine sediments around Hawaii. The first signs of its presence on Earth have been dated at over a billion years, well before the appearance of the first animals.
Researchers at the University of Toronto have identified that neural crest stem cells, a group of cells located in the skin and other parts of the body, are the origin of reprogrammed neurons previously discovered by other scientists.
When early cartographers undertook perilous expeditions to map unknown corners of the world with sextants, compasses, and hand-drawn diagrams, it's unlikely they imagined that someday anyone with an internet connection would have access to a seamless view of the entire planet from the comfort of their own home.
During embryonic development, cells start out as pluripotent, or have the potential to become many different cell types through differentiation.
Common lymphoid progenitors, pre-pro-B cells, pro-B cells, pre-B cells, immature B cells, and finally more mature and specialized B cells are the stages in which B cells, white blood cells that produce antibodies, develop.
Pipetting liquids into tiny test tubes, analyzing huge datasets, poring over research publications-;all these tasks are part of being a scientist.
There is variability in when and how cells divide during the development of embryos. While researchers traditionally believed this variability was an obstacle that needed to be regulated, the Hiiragi group now found that it actually promotes healthy development.
In some mammals, the timing of the normally continuous embryonic development can be altered to improve the chances of survival for both the embryo and the mother.
Researchers at the Johns Hopkins University School of Medicine have conducted a comprehensive analysis of the variations present in human stem cells. This study sheds light on how the unique “developmental dance” at the molecular level within an individual's cells can shape the formation of the brain and the body.
Researchers led by the Institute of Molecular Biology have found that 5-formylcytosine (5fC), a DNA alteration, acts as an activating epigenetic switch to activate genes during the early stages of embryonic development.
Scientists discover how TGF-Beta, a crucial protein in development and cancer, sends its message even while tethered to the cell membrane.
In processes such as embryonic development, wound healing or cancer invasion, cells are known to move in groups in a coordinated way.
An ancient gene is crucial for the development of the distinctive waist that divides the spider body plan in two, according to a study publishing August 29th in the open-access journal PLOS Biology by Emily Setton from the University of Wisconsin-Madison, US, and colleagues.
The National Institute of General Medical Sciences, a branch of the National Institutes of Health (NIH), has awarded Yubing Sun, associate professor of mechanical and industrial engineering at the University of Massachusetts Amherst, a $1.9 million Maximizing Investigators' Research Award to support the exploration of the fundamental principles behind the process that close gaps caused by injury or growth between cells.
The ability to turn experiences into memories allows us to learn from the past and use what we learned as a model to respond appropriately to new situations. For this reason, as the world around us changes, this memory model cannot simply be a fixed archive of the good old days.
In work conducted both at UC Santa Barbara and the Physics of Life Excellence Cluster of TU Dresden, biophysicist Otger Campàs and his research group have found that cell nuclei control the architecture and mechanics of eye and brain tissues during embryonic development.
The Prunus genus, encompassing apricots, peaches, plums, and mei, is vital due to its economic and nutritional value.
Genomes can now be entrusted to store information about a variety of transient biological events inside of living cells, as they happen, like a flight recorder collecting data from an aircraft.
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