The inhibitory effects of whole and fractionated acetone extracts of leaves of four species of Tanacetum were assessed in vitro, using a human polymorphonuclear leucocyte-based bioassay. Biochemical investigation detected the bioactive germacranolide, parthenolide, at high concentrations, in extract
Effect of high-voltage pulses on the viability of human leucocytes in vitro
✍ Scribed by Dr. K. Hansson Mild; L. Lövdahl; K.-G. Lövstrand; S. Løvtrup
- Publisher
- John Wiley and Sons
- Year
- 1982
- Tongue
- English
- Weight
- 356 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0197-8462
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Human leucocytes were exposed to high‐voltage pulses (transient currents) produced by discharging a capacitor through a test chamber containing the cell suspension then tested for viability using trypan blue. With the pulse discharge times of 1 and 3 μs increases in the number of dyeloaded cells were seen for field strengths above 2.6 kV/cm in the sample. For 0.2‐μs pulses the critical field strength was about 5 kV/cm.
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