Sentences with phrase «chicken embryos»

A new study on chicken embryos may help researchers understand how humans developed their sensitive daylight vision.

But the frontrunner is MVA, produced in the 1960s by German scientist Anton Mayr by growing vaccinia in chicken embryo fibroblasts for 570 generations.

The results also provide insight into the biology and development of chicken embryos in fertilized and incubated eggs.

Experiments with chicken embryos suggest that calcium helps set up left - right asymmetry very early in development.

Bugscope grew out of Chickscope, another Beckman Institute project that allowed students to study magnetic resonance images (MRI) of developing chicken embryos via the Web.

«It fell out of favor because the chicken doesn't have a placenta, but the data shows that if you are looking at a direct teratogenic assault on an embryo, that chicken embryo model is a great model, with a high degree of predictability of what happens in humans,» Bushdid said.

These induced, germ - like cells were injected into chicken embryos and migrated to the gonads — though colonizing the gonads is only the first step in success.

Using the nascent skin of the developing chicken embryo as a model system, we find that morphological and molecular symmetries are simultaneously broken by an emergent process of cellular self - organization.

But the replicate tests in domestic chicken embryos all failed, revealing that while the cells were definitely germ cells, they were not the primordial germ cells needed for recreating Heath Hens.

The scientists replicated ancestral molecular development to transform chicken embryos in a laboratory into specimens with a snout and palate configuration similar to that of small dinosaurs such as Velociraptor and Archaeopteryx.

The scientists heated chicken embryos to 40 ° to 41 ° Celsius for an hour and compared them with embryos incubated at a standard laboratory temperature of 37 ° C. Those chicks exposed to a high «fever» developed craniofacial defects, such as a shorter upper beak, and cardiovascular defects.

They injected a mutant gene for a cell - surface receptor for bmp into the right legs of two - day - old chicken embryos.

Studies of normal chicken embryos bolstered the case.

Studying «the growth of chicken embryo spinal neurones» was an obvious choice, and she would have liked to continue the project, but the practicalities soon convinced her otherwise.

And when they created chicken embryos with a mutated TDPB gene, they found that some neurons and other cells died.

Chicken embryo at 5.5 days of development, clarified by the «3DISCO» technique, observed with a Z1 light sheet confocal microscope (Zeiss, CIQLE platform).

Compare the modified chicken embryo's skull (center) to an unmodified chicken (left) and an alligator (right).

In 1933, he developed a method for cultivating viruses on chicken embryos — an important breakthrough that greatly enhanced the ability of researchers to study viruses, which were notoriously difficult to grow in the lab.

These IFITMs exist in many other species, and Elledge suggests that removing them from chicken embryos or animal cells that are used to make influenza vaccines may greatly boost vaccine production by allowing the virus to make more copies of itself.

In an experiment with chicken embryos, a temporary rise in incubation temperature — meant to mimic feverlike conditions — was enough to produce defects to the face and heart.

By manipulating the genes» proteins, they have seemingly turned back the evolutionary clock, producing snouts in developing chicken embryos that resemble those of alligators today.

The team then implanted them into chicken embryos and the cells continued to develop just like the native hair cells already present in the chick embryo.

The study involved experiments at three levels: (1) endothelial, or blood vessel - forming, cells in culture, (2) chicken embryos as animal models, and (3) saliva samples obtained from healthy donors.

The next step was to inject the germ - cells into developing domestic chicken embryos: the first step to creating the surrogate germ - line chimeric parents.

Using small - molecule inhibitors to eliminate the activity of the proteins produced by the bird - specific, median signaling zone in chicken embryos, the researchers were able to induce the ancestral molecular activity and the ancestral anatomy.

Hoping to clarify how BMPs guide neural crest cells to form the face, the team coated tiny beads with a protein called noggin, a BMP - blocker, then implanted those beads into the faces of chicken embryos.

To observe how fever impacts a developing fetus, the researchers studied zebrafish and chicken embryos.

Looking at the way muscle and bone develop in turtle, mouse and chicken embryos, they found that there is initially a common pattern — also likely shared with their last common ancestor.

Chicken embryos have been induced to grow teeth without any transplant of tissue from another organism.

Larsson determined that in chicken embryos, a tail does begin to grow in the normal course of events.

The trick is to run the tape of evolution over again: to intervene in the development of a chicken embryo, for instance, to reverse evolution, rolling back the clock to manifest earlier patterns of gene expression.

That skeleton started out as an embryo, he reasons, so why couldn't we biochemically nudge a chicken embryo this way and that, «until what hatched was not a chicken but a small dinosaur, with teeth, forearms with claws, and a tail?»

Mary Shelley captured Victorian anxiety about the subject with her Gothic tale of Frankenstein and Michael Crichton's 1990 bestseller Jurassic Park showed this concern continues, arising from such techniques as genetic modification, animal cloning and now a plan to manipulate a chicken embryo to awaken the dinosaur within.

In an experiment with chicken embryos, a temporary rise in incubation temperature — meant to mimic feverlike conditions — was enough to produce...

Ramping up production to 600 million doses would be a challenge, particularly because the avian flu often kills the chicken embryos.

The researchers confirmed Olig2's role in promoting motor neuron formation by increasing or blocking the function of Olig2 in the spinal cords of developing mouse and chicken embryos, as well as during motor neuron formation in mouse embryonic stem cells.

Last year, his supervisor Arkhat Abzhanov persuaded a chicken embryo to grow a snout rather than a beak.

Developmental biologists Juan Carlos Izpisúa Belmonte and Á Raya of the Salk Institute for Biological Studies in La Jolla, California, and their colleagues have clarified what goes on in chicken embryos.

In a separate study, published in September by the journal eLife, Butler and her colleagues discovered how signals from a family of proteins called bone morphogenetic proteins, or BMPs, influence the development of sensory interneurons in chicken embryos.

Particles of the virus are then harvested from the chicken embryos, killed and prepared as vaccine.

She even reminded readers that the experiments creating dinosaur - like snouts on chicken embryos have not led to walking dino - chickens.

The identity of the cells was further confirmed by lineage tracing experiments, where the reprogrammed cells were implanted in chicken embryos and acted just as neural crest cells do.

Genome and epigenome engineering CRISPR toolkit for probing in vivo cis - regulatory interactions in the chicken embryo.

«With the chicken embryo, we can look at a very wide range of developmental stages, and we can identify potential target organs.

Bushdid's in vitro toxicology model, based on a chicken embryo, promises to deliver significant benefits.

That's when concerns emerged about whether the chicken embryo model was the best platform for assessing teratogens, or agents that cause malformations in an embryo.

To see whether these proteins were important for beak formation, they infused a tiny bead with protein inhibitors and implanted it in the developing chicken embryo's face.

A research team led by scientists from Yale and Harvard have tweaked the activity of proteins in a chicken embryo to create a chicken with a reptile - like face.