Among the many molecules we examined, only CD133 and Numb could be asymmetrically segregated.
There are, and ever have been, only so many molecules in existence and all the rest -- birth, growth, death, development, change, adaptation, transformation, evolution -- is really just about recycling.
Since each olfactory receptor cell responds with varying sensitivity to several related molecules, a few odorant molecules to which a receptor is highly sensitive can elicit the same response as many molecules to which it is only slightly sensitive.
This is because, as was pointed out earlier, receptor responses depend on the type of stimulus as well as the intensity of the stimulus: A few odorant molecules to which an olfactory receptor cell is highly sensitive can elicit the same response as many molecules to which it is only slightly sensitive.
The erosive potential of a foodstuff is the result of complex interactions of many molecules where calcium chelating properties are only one parameter.50 Table 2 presents studies where acidic products have been tested in relation to dental erosion.
Possibly only one of many molecules that pass through these channels is critical for a given function at a given time, or a class of similarly charged molecules may be gated in a manner that affects membrane potential (reviewed by Levin 2007).
Many molecules act as tiny magnets, but molecules tend to line up in an alternating up-and-down pattern that cancels out the magnetic field.
Although many molecules have an intrinsic ability to glow, they will do so only under the right circumstances.
Human red blood cells not only transport oxygen and carbon dioxide, but are also important in the elimination of many molecules from circulation, including products of immunologic reactions.
