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Vine tea, also known as ampelopsis grossedentata, is a Liana. Branchlets are cylindrical, with significant longitudinal ridges, and hairless.

The tendrils have two forked branches, separated by two nodes and intermittently opposite the leaves. The leaves are 1-2 feathered compound leaves, with a pair of 3-leaflets at the base of the 2-feathered compound leaves. The leaflets are ovoid, or long elliptical, with sharp or tapered tips at the top, wide wedge-shaped or nearly circular at the base, with 2-5 serrations on each side of the edge. The upper part is green, the lower part is light green, and both sides are hairless; 3-5 pairs of lateral veins, slightly protruding network veins, and the last level of network veins are not obvious; The petiole is 1-2 centimeters long, and its main component is dihydromyricetin, which contains a small amount of myricetin.

Pharmacological experiments have shown that,

Dihydromyricetin can significantly antagonize the contraction response of rabbit aortic strips induced by adrenaline (NA) and high K, with low toxicity; And it has functions such as dispelling phlegm, relieving cough, lowering blood lipids, and protecting the liver.

Myricetin has antibacterial, anticancer, cough relieving, expectorant, diuretic, and other effects.

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