A highly active anticomplement factor from the venom of Naja kaouthia

A highly active anticomplement factor (cobra venom factor) from the venom of Naja kaouthia in South Yunnan, China was isolated by sequential column chromatography (SP-Sephadex-C25, Q Sepharose HP and Sephadex G-150). It displays strong anticomplement acti

One new flavanoid and Anti-HIV active constituents from boussingaultia gracilis miers var. pseudobaselloides bailey

Boussingaultia gracilis Miers var. pseudobaselloides Bailey (Basellaccae) is a folk medicine used as an analgesic and supplements, only a few research was reported on the chemical constituents of this plant. This paper presented its chemical and anti-HIV

Two new compounds and anti-HIV active constituents from Illicium verum

Two new compounds named illiverin A (1) and tashironin A (8) were, isolated from the roots of Illicium verum, together with seven known compounds: 4-allyl-2-(3-methylbut-2-enyl)-1,6-methylenedioxybenzene-3-ol (2), illicinole (3), 3-hydroxy-4,5-methylenedi

Migration routes and stopover sites of Black-necked Cranes determined by satellite tracking

Because their breeding and wintering areas are in remote locations, little is known about the biology of Black-necked Cranes (Grus nigricollis), including their migratory behavior. Using satellite telemetry, we monitored the migration of Black-necked Cran

Expression of VEGFR-2 on HaCaT cells is regulated by VEGF and plays an active role in mediating VEGF induced effects

Vascular endothelial growth factor (VEGF) and its receptor VEGFR-2 play important roles in mitogenesis and chemotaxis of endothelial cells. In normal human skin, VEGF is expressed and secreted by epidermal keratinocytes. Emerging data suggest that keratin