Tag: "neck" at biology news

Blood test may help signal tumor's remission, return in throat cancer patients

...surgery or drug therapy. “Cancers of the head and neck are insidious because surgical removal of the tumo...ajor goal of the NCI and this research in head and neck cancer is an excellent example of the type of collaborative study between two NIH institutes that he...

CT scan reveals ancient long-necked gliding reptile

...at flattened, image of a small reptile with a long neck and swept back wings. Gliding behavior evolved several times in reptiles and is present in the Indonesian reptile Draco. ...

Reconstructing the biology of extinct species: A new approach

...lls that send signals to the brain, triggering the neck and eye muscles to reflexively keep the visual image stable. The basic hypothesis of the project was that the organ of balance -- which helps stabilize an animal's gaze and coordinate its movements as it travels through the environment -- should...

Rare soft-shell turtle, nesting ground found in Cambodia

...howing. It possesses long claws and can extend its neck with lightning speed to bite with jaws powerful enough to crush bone. “It has the fastest strike of any animal I’ve ever seen, including cobras,?Emmett said. The researchers also found a nesting ground for the species and brought back eggs tha...

Fused nasal bones helped tyrannosaurids dismember prey

...head nearly one and a half times as long. T. rex's neck power was similarly staggering. For instance, in a split second, a T. rex could toss its head at a 45 degree angle and throw a 50kg person five metres in the air. And that's with conservative estimates of the creature's muscle force, says Snively. ...

Male reindeer inflate a large air sac in the neck region to emit their hoarse rutting calls

...le reindeer's air sac, influencing vocal sound and neck contour, may contribute to his sexual prowess and .... In this posture the inflated air sac expands the neck region. Both acoustic and optical display serve to deter rival males and thereby prevent fighting, a...

Cancer vaccines -- Taking a jab at cancer by stimulating the immune system

...f the immune system into targeting p53 in head and neck squamous cell cancer. A phase I clinical trial of ...h will eventually enroll 24 patients with head and neck cancer, has three experimental arms, each including a DC-based vaccine containing p53-derived T cell...

Genes and biomarkers that allow doctors to choose the right therapy for the right patient

...gulating the sensitivity of squamous cell head and neck cancer cells to lapatinib, a cancer drug that was ... evaluated 7,000 genetic targets in human head and neck cancer cells to discover specific genes that might shade an individual’s response to Tykerb. "Our...

Computer imaging assists with facial reconstructive surgery

...ngle: the intersection of a line drawn next to the neck and a line drawn from the bottom of the chin through the point where the neck and the jaw connect Mentocervical angle: the intersection of a line drawn from the tip of the nose...

Human preference for other species could determine whether they survive

... display the warmest colors in the upper body, the neck and head. He likened the effect to that of a man in a tuxedo pinning on a red carnation. Unlike some other types of animals, human preference for particular penguin species does not seem to be driven by a "cuteness" factor. The four books Stokes ...

Nonvenomous Asian snakes 'borrow' defensive poison from toxic toads

...the snakes to store toxins from the toads in their neck glands. When under attack, the snakes re-release the poisons from these neck glands. Many invertebrates sequester dietary toxins for use in defense, including milkweed insect...

Stress hormones may play new role in speeding up cancer growth

...eal carcinoma (NPC), a serious, incurable head and neck cancer that occurs most frequently among people of Chinese descent. They treated Glaser's cell line with norepinephrine and, as predicted, the cells all produced MMP-2, MMP-9 and VEGF. This showed that the receptors for this hormone were present o...

'Erectile dysfunction' drugs heighten natural anti-cancer activity

...ults, as did tissue samples taken from 14 head and neck cancer and multiple myeloma patients. Sildenafil, marketed under the trade name Viagra, is one of a class of drugs used to treat erectile dysfunction in millions of men, and in recent years, its ability to stimulate the production of NO has been...

Abnormal overexpression of p53 is a predictive molecular biomarker

... radiation and chemotherapy treatment for head and neck cancers now has been found to predict a good progn...h advanced squamous cell carcinoma of the head and neck cancer (SCCHN) whose pre-treatment tumor samples over-expressed p53 protein were significantly more ...

Winning by a neck -- Giraffes avoid competing with shorter browsers

The giraffe's elongated neck has long been used in textbooks as an illustration...the first real experimental evidence that the long neck of the giraffe might have evolved as a consequence of competition, which provides support for a prev...

Making a face: A new and earlier marker of neural crest development

... the face, skull and nerve centers of the head and neck in vertebrates is determined much earlier in development than previously thought, and is independent of interaction with other forming tissues, according to a recent study published in the journal Nature. The collaborators at Yale and Caltech demon...

Brain-computer link lets paralyzed patients convert thoughts into actions

...re spinal cord injury, has been paralyzed from the neck down since 2001. After having the BrainGate sensor implanted on the surface of his brain at Rhode Island Hospital in June 2004, he learned to control a computer cursor simply by thinking about moving it. During 57 sessions, from July 2004 to April...

Gene screen for breast cancer better than pathologist's 'eye'

...obtained relatively easily, such as lung, head and neck cancers, pancreatic and cervical cancers." Pathologists look for telltale shapes of cells to determine if cancer is present, but molecular changes in cells, especially for early cancers, are beyond the reach of even the most powerful microscopes....

Fatty spheres loaded with siRNA shrink ovarian cancer tumors in preclinical trial

...rexpressed in colon, breast, thyroid, and head and neck cancers. ...

Mitochondrial DNA sequencing tool updated

...its predecessor to sequence variations in head and neck cancer samples. The v2.0 also detected nearly thr...variations in the non-coding D-loop of 14 head and neck tumor samples. Included in this tally were several mutations that possibly are informative of the d...

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