In some drugs, only one of the twins provides the benefits, fitting into chemical receptors in the body to flip switches on or off to fight illness.
12.
In that sense, temperature-related perturbation in protein structure, as opposed to chemical receptor interactions, may well be the basis for the ion channel changes, but details are lacking.
13.
A normal cell has chemical receptors on its surface that link up with specific molecules generated by the body and control the timing of such functions as eating and sleeping.
14.
Each egg cell is surrounded by a thick envelope of protein called the zona pellucida, which protects the cell and also contains chemical receptors that attract sperm cells seeking to enter.
15.
More technically called beta-adrenergic blockers, the drugs actually block a class of chemical receptors called beta nerve receptors on the surface of cells in the sympathetic nervous system that help control the heart.
16.
These actions inhibit the respiratory center of the encephalic trunk, but later this inhibition disappears and the respiratory center responds to the stimulation of the peripheral chemical receptors because of the hypoxia increasing ventilation up to six times.
