Sentences with phrase «chick embryo»
"Chick embryo" refers to a developing baby bird inside an egg before it hatches. It's a term used to describe the early stages of a baby chicken's life, which grows and develops inside the egg until it's ready to hatch and become a full-grown chick. Full definition
Now, a study of chick embryos shows that birds do indeed have thumb, index, and middle «fingers» in their wings.
sciencemag.org
The tumor and the developing chick embryo therefore shared the same blood supply, although they were not in direct contact.
The researchers tested this observation by infecting chick embryos with viruses carrying R - fng, causing the gene to be expressed in many different places.
He and the Vereide Group grow precursors of human arterial cells, build colonies of dendritic cells (cells which can alert the rest of the immune system to the presence of a tumor), and use chick embryos to study the formation of early tissue layers for a possible future in which complex tissues, or even organs, can be grown to replace diseased, wounded, or malfunctioning ones.
Afterwards, you'll receive one of the two rabies vaccines that have been approved for human use by the Food and Drug Administration — the human diploid cell vaccine (HDCV) and the purified chick embryo cell culture vaccine (PCECV).
Chick embryo culture is best.
When asked by Nature for relevant studies, the plaintiffs» lawyers at Hagens Berman Sobol Shapiro in Seattle, Washington, pointed to work showing one - sided limb defects in chick embryos exposed to thalidomide and thalidomide analogues (C. Therapontos et al..
Manipulating crucial proteins transforms a normal chick embryo (left) into one with two beaks (right).
In the treated chick embryos, the palate looked more like it does in other vertebrates: flat and seemingly reconnected to the jaw bones.
Last year, researchers found that suppressing this gene in male chick embryos made them develop a testis with feminine characteristics.
Chick embryos usually develop with the left eye tucked inward and the right eye facing out.
Multi-photon imaging of the embryonic eye: A false - coloured image showing a cutaway through the invaginating lens placode (blue tissue layer) situated within the optic cup (yellow tissue layer) of a 2.5 - day chick embryo.
Brucknet et al. «p - HMW - Collagen, a minor collgen obtained form chick embryo cartilage without proteolytic treatment of the tissue `, Eur.
In their current series of experiments, Izpisúa Belmonte's team inserted three different members of the Wnt family into viruses which, in turn, were implanted into the flanks of chick embryos.
A gene called Fibroblast growth factor 8 (Fgf8) becomes active in the front part of the face as it takes shape in 3 - day - old chick embryos; later, just before bones form, a gene called WNT helps drive the proliferation of cells in the middle of the face, where it may prompt expansion of the premaxillary bones.
According to their study, published in the current issue of the journal Cell, these genes — from the Wnt family — interact with another set of previously identified growth factors to induce limb formation in chick embryos.
When tissue from the jaw region of a chick embryo is wrapped in tissue from a mouse embryo from the region where teeth are formed and then incubated in the eye of an adult mouse, the chick develops teeth.
Although we did most of the studies in frogs, we also followed with chick embryos and found cyclopean eyes, which is important because amphibians and birds are very different, says Rao.
Transplanting completely failed to keep the chick embryo's tail growing, but the retinoic acid, Larsson said, «pushed tail growth to the upper range of normal development.
It seemed so obvious that if fairly small changes in development, which adjusted the timing and concentrations of growth and signaling factors, could have led to the evolution of birds from nonavian dinosaurs, we could readjust those changes in development and get a dinosaur from a chick embryo.
If the genes in the chick embryo are very close to those of an ancestral, nonavian dinosaur — and if the changes, over more than 150 million years, have been almost all in regulation of the genes — then we could reactivate the old pattern of regulation.
He has been able to piggyback on previous work on the development of the chick embryo: When researchers interested in some process use a stain to show gene activity, the stain affects the whole embryo, providing clues about which genes are active in tail growth.
A chick embryo's face develops largely thanks to cells from an embryonic structure known as the neural tube.
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 fused pair of beak - forming bones in a chick embryo (left) remain rounded and paired in treated chicks (middle), resembling those in alligators (left).
Using zebra fish and chick embryos, Takumi Ito and colleagues from the Tokyo Institute of Technology showed that thalidomide binds to cereblon, causing pectoral fin malformations in zebra fish and the complete absence of forelimbs in chicks.
In both zebrafish and chick embryos, adding a version of cereblon that doesn't bind to thalidomide seemed to blunt the drug's effects.
Kees Weijer of the University of Dundee in Scotland, who studies the migration of cells in chick embryos and slime mold, has been waiting for a light sheet microscope since the EMBL group first publicized its advances.
Further tests — such as injecting the cells into mouse or chick embryos to see if they establish proper connections — will be needed to see if they are full - fledged neurons.
The amenability of the chick embryo to manipulation and imaging, combined with the powerful technique of in vivo electroporation and the strong similarities of muscle formation in birds and mammals provide a unique paradigm to characterize this process in amniotes.
Use of pHluorin to assess the dynamics of axon guidance receptors in cell culture and in the chick embryo.
To test their function during fusion, we use the chick embryo as a model.
A second line of research is to use skeletal muscle formation in the chick embryo as a model to understand how cells within tissues display complex behaviours while being exposed to an ever - changing cellular environment.
In chick embryos, skeletal muscle formation is initiated by migrating Delta1 - expressing neural crest cells that trigger NOTCH signaling and myogenesis in selected epithelial somite progenitor cells, which rapidly translocate into the nascent muscle to differentiate.
This study applied aluminum to rats, fibroblast cultures and chick embryos and discovered that collagen synthesis was inhibited in all tissues.