The crude ethanolic extract from aerial parts of Pothomorphe umbellata L. (Piperaceae) and fractions obtained by partitions sequentially among water-methanol, methylene chloride, and ethyl acetate, as well as the major constituent, 4-nerolidylcatechol, were, respectively, evaluated and evidenced for antioxidant and cytotoxic effects through fluorometric microplate and microculture tetrazolium a...

The Role of Nuclear Position and Locus Conformation in Regulating V(D)J Recombination of the Tcrb Locus by Ryan Jon Schlimgen Department of Immunology Duke University Date:_______________________ Approved: ___________________________ Dr. Michael S. Krangel, Supervisor ___________________________ Dr. Yuan Zhuang, Chair ___________________________ Dr. Garnett Kelsoe ___________________________ Dr...

Background: Hunteria umbellata (HU) is a tropical rainforest shrub in the Apocynaceae family, with various medicinal properties. Nanostructured systems improve pharmacokinetic and pharmacodynamic properties of bioactive compounds. The current study evaluates antidiabetic wound healing efficacy umbellata-chitosan nanoparticles (HUCNPs). Methods: Aqueous seed extract was prepared from mature HU p...