Sentences with phrase «embryonic development»
Embryonic development refers to the process by which a fertilized egg grows and transforms into a fully formed organism. It includes various stages of cell division, growth, and differentiation, where specialized tissues and organs begin to develop. Essentially, it is the early stage of an organism's life when its body structure and systems start to form. Full definition
Accordingly, they emerge quite early during embryonic development.
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Comparison of the data revealed that use of certain starting points differs in two phases of embryonic development in particular: Before and after activation of the embryonic genome.
The technique marks a major development in genetic diagnoses, which previously could not be conducted this early in embryonic development and required much larger amounts of biological material.
In contrast to many other animals, human embryonic development is a mysterious process, particularly in the first weeks after conception.
This process is mediated by biological molecules called growth factors, which are proteins that occur naturally in our cells and guide processes ranging from embryonic development to healing.
It should be said that stem cell lines are quite different from normal embryonic development and these results should be interpreted with caution.
To achieve this result, the researchers studied the interactions between some molecules that control embryonic development.
Experts say the new method, reported in the current issue of Cell, could also be a useful tool for studying embryonic development.
They then exposed these cells to certain growth factors in - vitro to cause them to turn into liver - like cells, in a process that mimics embryonic development.
Again, the appearance of a protein in a certain part of the egg cell may affect embryonic development or the formation of organs days and weeks later.
The new strategy is based on human RNA - binding proteins that normally help guide embryonic development.
In addition to generating new insights into embryonic development, the technique might someday be used to diagnose diseases and track therapy.
To fill that gap, the researchers used mice to study the genetics behind embryonic development of the stomach.
If damage occurs during embryonic development, for example, due to a mutation or environmental influences, repair mechanisms ensure that the animal later appears healthy.
Similar mechanisms have already been identified in the positioning of cells in embryonic development.
The new study could provide clues to the genetic code that controls the expression of genes, and may also further our understanding of embryonic development and diseases such as cancer.
Some researchers have proposed deleting or disabling key genes that are required for early embryonic development.
Remarkably, the human lincRNAs rescued the zebrafish and restored brain development and head size for both lincRNAs, indicating that the human lincRNAs may have the same role in embryonic development as their zebrafish analogs.
The scientists rescued the microcephaly during mouse embryonic development by removing a protein that caused the loss of stem cells.
It is based on the definitive books of mouse embryonic development by Theiler (1989) and Kaufman (1992) yet extends these studies by creating a series of three dimensional computer models of mouse embryos at successive stages of development with defined anatomical domains linked by a stage - by - stage ontology of anatomical names.
The researchers caused stress - induced changes at an early stage of embryonic development with microRNA injections.
Reiter is interested in how cells communicate with each other during vertebrate embryonic development and how this communication goes awry in disease.
In their study, the researchers illustrated the power of their approach using 20 distinct biological systems, including embryonic development in nematodes and fruit flies.
Now, scientists at the Technische Universität München (TUM) have characterized a small heat shock protein responsible for embryonic development in the Caenorhabditis elegans nematode.
Part of the challenge to identifying the correct genetic and molecular programming to coax hPSCs in to colonic organoids has been a lack of data about embryonic development of the organ, according to the authors.
When Kaufman, Zon and colleagues looked to see what was different about these early cancer cells, they found that crestin and the other activated genes are the same ones turned on during zebrafish embryonic development — specifically, in the stem cells that give rise to the pigment cells known as melanocytes, within a structure called the neural crest.
Oriented cell division is used throughout embryonic development and adult homeostasis to shape and pattern tissues.
«The onset of cancer is often through reactivation of embryonic development pathways that are otherwise dormant,» he says.
The only previous trial using ES cells to treat Parkinson's began last year in Australia; participants there received stem cells from parthenogenetic embryos — unfertilized eggs that are triggered in the lab to start embryonic development.
Cook's illustrious subjects include the umbrella - bearing British cosmologist Sir Martin Rees of the University of Cambridge, the wrinkle - faced late naturalist and flea expert Miriam Rothschild, and the biologist Christiane Nüsslein - Volhard (left) of the Max Planck Institute for Developmental Biology in Tübingen, Germany, who won the 1995 Nobel Prize in Physiology or Medicine for codiscovering key genes that shape embryonic development.
It is possible that in embryonic development similar sorts of ordering are at least initiated by chemical gradients (see LEC).
A working knowledge of pregnancy and human development from the anatomy and physiology point of view including fertilization, basic embryonic development, and basic fetal development.
In the initial stages of the research project, Yaniv's team members Julian Nicenboim and Dr. Guy Malkinson obtained images of developing zebrafish embryos, whose transparent bodies make it possible to document embryonic development in real time over several days.
They monitored embryonic development until stage 22 when their sex is determined.
Turtle embryonic development is divided into 27 stages.
In the absence of gdf3, Ndr1 and Ndr2 signaling is dramatically reduced and embryonic development goes awry.
You call the combination of evolution and embryonic development evo devo.
«New signaling pathway in embryonic development discovered.»
«Novel genetic mutations may arise during early embryonic development rather than being acquired from the parents» germline.»
According to a report published online today by the journal Nature, mutations in genes that guide embryonic development allowed insects to develop a radically different body plan from that of their crustacean - like ancestors some 400 million years ago.
This program normally shuts off after embryonic development, but occasionally — for reasons not yet known — crestin and other genes in the program turn back on in certain cells.
However, brachiopod embryonic development is very different from that of molluscs: it resembles that of deuterostomes, in which embryos form anuses first and mouths second,» says Yi - Jyun Luo, the first author of the paper, «The results of the Lingula genome project will help future research of these differences and the roles that specific genes play in development of various brachiopod body structures.»
The study highlights the tenuous steps in embryonic development related to sex determination and how a single genetic mutation can mean the difference between male and female.
Previous studies by Prins and colleagues using rats showed that exposure to elevated estrogen or BPA during embryonic development increased the rate of prostate cancer later in life.
Some of the first genes to turn on in early human embryos are transposon remains that now help direct embryonic development.
RNA analysis of paternal mitochondria during early stages of embryonic development hinted that it is the cps - 6 gene that facilitates this process, which the team confirmed by studying sperm lacking cps - 6; without it, paternal mitochondria remained significantly later into the development stage.