The gemstone alexandrite is known for its feature to change color depending on the spectral quality of the incident light. Thus, the stone looks green when illuminated by white LED light but looks red when illuminated by incandescent light. This effect (alexandrite effect) is caused by a special relationship between the spectral quality of the incident light and the absorbance spectrum of the s...

Lectin from the bulbs of Cyclamen mirabile which is an endemic species Turkey was successfully isolated by affinity precipitation with alginate in one step. The purified protein produced two bands showing a dimeric structure SDS-PAGE (13.5 and 14.8 kDa). C. lectin showed activity stability broad pH scale kept its haemagglutination temperature range 4-40°C. MgCl2 HgCl2 inhibited lectin. In this ...