It can also be argued that there's a sixth taste - 'hot' (in fact the activation of pain receptors).

Its compounds activate pain receptors, including the tongue's nerve endings.

Scientists are investigating whether it can be used to target the pain receptors in the brain that blight many lives.

High-powered lasers provide a less permanent way of delivering 'pure pain' - hitting pain receptors without reaching deeper-lying touch receptors at the same time.

It works by being absorbed through mucous tissue, such as the gums, before entering the nerves and blocking pain receptors.

Sensory receptor classification with respect to function suggest that different sensory modalities are governed by separate receptor classes.

The type and location of the sensory receptor activated by the stimulus plays the primary role in coding the sensation.

The influx of current will often bring the membrane potential of the sensory receptor towards the threshold for triggering an action potential.

The odor signals are sent directly from the sensory receptor neuron to the primary cortex.

The sensory receptor responds to its stimulus modality by initiating sensory transduction.

These stop molecules in food, which dissolve in fluids on the tongue, from being detected in the smell receptors in the nose.

Mitral cells are neurons that receive information from smell receptors in the vulture’s nasal cavity and transfer that information to the rest of the brain.

Using strong olfactory receptors (i.e. smell receptors), the male searches until it locates a female anglerfish.

Flies genetically altered to lack smell receptors could not tell the difference.

It has also given insight into the workings of many different biological systems, including smell receptors and protein structures.

Water also helps by swelling the food you eat, stimulating receptors in the brain to acknowledge that you've eaten enough.

A natural plant alkaloid, it binds to and stimulates receptors in the brain that are important for thinking and memory.

Arena says that the medicine works by stimulating a receptor in the brain that helps to control appetite and metabolism.

This stimulates receptors in your feet, taking the strain off your lower back.

The increased amounts of histamine released from histaminergic nerve endings can stimulate receptors.

Antigens are either a polysaccharide or a protein that reacts specifically with a cell surface receptor or an antibody.

These viruses infect specific bacteria by binding to surface receptor molecules and then entering the cell.

The cell surface receptor for insulin-like growth factor 2 also functions as a cation-independent mannose 6-phosphate receptor.

This protein functions as a cell surface receptor for bile acids.

It transduces an intracellular calcium signal and acts as a cell surface receptor.

Some of these proteins are thought to bind to flavour compounds in food as well as to taste receptor cells in the mouth.

The charge of the protein plays also an important role in its interaction with the sweet taste receptor.

The human tongue has 100 to 150 taste receptor cells on each of its roughly ten thousand taste buds.

The compounds can be searched by name, chemical structure, similarity to other bitter compounds, association with a particular human bitter taste receptor, and so on.

Many bitter taste receptor genes also have confusing synonym names with several different gene names referring to the same gene.