Sentences with phrase «olfactory receptors»
Cats rely less on their sense of smell for huntings than dogs do, which is apparent from the smaller repertoire of olfactory receptor genes in the feline genome.
massgenomics.org
There are more than 350 types of olfactory receptors in the nose, tuned to different scents.
«To fully understand the loss of olfactory receptor genes in the ground tit, further comparisons need to be made with genomes of closely related species inhabiting lower altitudes.»
This is because the cells that detect odors, called olfactory receptor neurons (ORNs) have two remarkable properties: 1) they are nerve cells closely related to nerve cells in the brain, and 2) unlike brain nerve cells, ORNs continually regenerate throughout a person's life.
Lurking within the mucus of the nose are the tips of olfactory receptor cells.
When this neuron type, which expresses the specific olfactory receptor Or47b, was missing, mating behavior in males was inhibited.
New genetic evidence shows why this is: Humans are losing so - called olfactory receptor genes at much higher rates than monkeys and apes.
Four of these six regions are located in known gene clusters: the protocadherin alpha cluster, two olfactory receptor clusters and a recently identified human microRNA cluster (Figure 2).
The genes regulate each other's activity, interacting in unique combinations to set each precursor cell on a distinct path by turning on different olfactory receptors in each cell.
Related sites PNAS paper Human Olfactory Receptor Database Exploratorium (HORDE) Yoav Gilad's home page
Our noses are packed with olfactory receptors, each of which is tuned to a precise scent molecule.
The researchers are convinced that the main olfactory receptors evolved independently of the co-receptor long after insects had adapted to terrestrial life.
It has a fairly large nose and muzzle, allowing ample room for olfactory receptors.
Together, the findings demonstrate that Ggamma13 is essential for mammals to smell odors and extend the current understanding of how olfactory receptor cells communicate information about odors to the brain.
The Amur tiger genome was predicted to contain 20,226 protein - coding genes and 2,935 non-coding RNAs, and was enriched in olfactory receptor sensitivity, amino - acid transport, and metabolic - related genes, among others.
Those molecules then latched onto olfactory receptors located on nerve endings in their nostrils.
Smell or olfaction occurs when chemicals stimulate olfactory receptors on a relatively small patch of tissue located high in the nasal cavity.
With close to 300 million olfactory receptors at the end of your pup's snout, he can smell up to 100,000 times more than you, so the Wooly puts your furkid's nose and brain to work by mimicking a hunt for food in grass or fields.
They looked for genes that encode olfactory receptors, which detect odors.
The benefits of using olfactory receptor neuron samples to study psychiatric disorders and patient responsiveness include their similarity to brain neurons, the relatively easy biopsy procedure, and the potential for scientists to sample and compare cells from the same patients throughout several different stages of disease.
The hope is that this approach will provide new olfactory receptor neurons for people whose own have been permanently damaged or defective since birth.
There are many thousands of olfactory sensory neurons expressing any particular olfactory receptor.
Scott Sampson, the study's lead author, stated, «The jumbo - sized schnoz of Nasutoceratops likely had nothing to do with a heightened sense of smell — since olfactory receptors occur further back in the head, adjacent to the brain — and the function of this bizarre feature remains uncertain.»
In effect, the number of distinct odors is limited only by the number of olfactory receptors capable of interacting with them.
They form a functional complex with another protein, the so - called olfactory receptor co-receptor, which enables insects to smell the tiniest amounts of odor molecules in their environment very rapidly.
Early research on insect olfactory receptors focused entirely on insects with wings.
In the cultivated cells, the team detected a number of typical olfactory receptors.
To determine if smell alone has an effect on longevity, Pletcher's team created a fruit fly strain that had a particularly sensitive olfactory receptor inhibited.
The animals had lost many olfactory receptors, which detect odors, as well as urinary proteins, which can impact social status and mate choice.
Furthermore, the team revealed the evidence that the genes related to muscle strength as well as energy metabolism and sensory nerves, including olfactory receptor activity and visual perception, appeared to be undergoing rapid evolution in the tiger.
For instance, in the human genome we still see the remnants of the large olfactory receptor gene family that gave our evolutionary ancestors a keen sense of smell, even though humans no longer rely on them.
The pattern of gene expression is strikingly similar to that for individual olfactory receptor genes, Liberles says.
The team estimates that the kakapo has 667 functional olfactory receptor genes.
Mice, for example, have close to 1000 working olfactory receptor genes, and humans have roughly 400.
Minute Impurities Contribute Significantly to Olfactory Receptor Ligand Studies: tales from Testing the Vibration Theory.
Identifying the substances which attach to appropriate olfactory receptors could shed light on the communication between potential partners, not only in bats.
Alternatively, they could be expressed at a different age [23], or they may be cryptic pseudogenes that have disrupted promoter elements and thus are no longer recognized by the machinery regulating olfactory receptor choice.
High - throughput analysis of mammalian olfactory receptors: measurement of receptor activation via luciferase activity.
More than half of the participants could not smell it and researchers found that genetic variations near olfactory receptor genes was associated with the ability to detect the smell.
Looking at this from a scientific angle, Dr Chua Hui Li, resident veterinarian at the Pet Resource Centre, says olfactory receptor cells are largely at play here.
Having more dedicated olfactory receptors than us, our pooches are able to read coded chemical messages more specifically than we can.
By comparison, a dog has more than 220 million olfactory receptors whereas we have only 5 million).
By Stephanie Cristello > click here to download PDF You walk into an empty gallery — white walls, fluorescent lights — to encounter a series of electronic diffusers, each containing a molecule formulation designed to trigger certain olfactory receptors.
The device mimics the canine olfactory receptors» ability to detect airborne vapors from explosives that human noses can not.