The receptors are bound to beads coated with a polyhydroxy scintillator.
2.
Also present in " Nicandra " are calystegines, a new group of polyhydroxy alkaloids with a nortropane skeleton and named for the bindweed genus " Calystegia " ( Convolvulaceae ).
3.
The terms " flavonoid " and " bioflavonoid " have also been more loosely used to describe non-ketone polyhydroxy polyphenol compounds which are more specifically termed flav "'a "'noids.
4.
Most prospective predators are believed to be discouraged from preying on " P . planum " due to high levels of polyclinal, a sulfated polyhydroxy benzaldehyde that it produces and which is found in highest concentrations in the outermost layer of tunic material.
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