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Radula acuta Mitt. Radula acutangula Steph. Radula acutiloba Steph. Radula aguirrei R.M.Schust. ex M.A.M.Renner Radula allisonii Castle Radula amentulosa Mitt. Radula amoena Herzog Radula anceps Sande Lac. Radula aneurysmalis (Hook.f. & Taylor) Gottsche, Lindenb. & Nees Radula angulata Steph. Radula anisotoma M.A.M.Renner Radula appressa Mitt.
The radula (US: / ˈ r æ dʒ ʊ l ə /; pl.: radulae or radulas) [1] is an anatomical structure used by mollusks for feeding, sometimes compared to a tongue. [2] It is a minutely toothed, chitinous ribbon, which is typically used for scraping or cutting food before the food enters the esophagus .
In 2018, a study showed that perrottetinene is mild to moderately psychoactive through activation of the cannabinoid receptor 1.(-)-cis-Perrottetinene was found to have a binding affinity of 481 nM at CB1 and 225 nM at CB2, while the unnatural (-)-trans-perrottetinene was found to more active with binding affinities of 127 nM at CB1 and 126 nM at CB2, both acting as partial agonists.
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Individual shoots are typically 0.3–1.5 mm (0.012–0.059 in) wide and can reach up to 20 mm (0.79 in) in length. The plant has two distinct parts to each leaf: a larger upper lobe (dorsal lobe) and a smaller lower lobe (ventral lobe), which is a characteristic feature of the genus Radula. [3]
Radula is the second most diverse liverwort genus found in Baltic and Bitterfeld amber, after Frullania which has nine species. However, since these amber deposits formed from conifer resin, the fossils may only represent species that grew on these trees, while other Radula species that lived primarily on other plant hosts may not have been ...
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