A plant genus of the family RUBIACEAE. Members contain uncarine and other cytotoxic and hypotensive oxindole alkaloids.
A vine (Uncaria tomentosa) indigenous to the Amazon rainforest whose name is derived from its hook-like thorns. It contains oxindole alkaloids and glycosides and has many medicinal uses.
Concentrated pharmaceutical preparations of plants obtained by removing active constituents with a suitable solvent, which is evaporated away, and adjusting the residue to a prescribed standard.
The parent cells that give rise to both cells of the GRANULOCYTE lineage and cells of the monocyte/macrophage lineage.
Organic nitrogenous bases. Many alkaloids of medical importance occur in the animal and vegetable kingdoms, and some have been synthesized. (Grant & Hackh's Chemical Dictionary, 5th ed)
Group of alkaloids containing a benzylpyrrole group (derived from TRYPTOPHAN)
Chemical substances that prevent or reduce the probability of CONCEPTION.
Plants whose roots, leaves, seeds, bark, or other constituent parts possess therapeutic, tonic, purgative, curative or other pharmacologic attributes, when administered to man or animals.