The major factors influencing the formation of sediments in reconstituted green tea infusion.

The effects of Ca(2+), caffeine and polyphenols on the formation of reversible tea sediments (RTS) and irreversible tea sediments (IRS) in green tea infusion were studied. Adding Ca(2+) (2 mmol/l) was found to increase the formation of RTS by 8% and IRS by 92%, while adding chelating ions of Na2EDTA significantly decreased the amount of RTS by 14.6%, but not the amount of IRS.

[Effect of fipronil on apoptosis rate and Bcl-2 of PC12 cells].

Objective: To study the apoptosis and mechanism of Fipronil on PC12 Cells.

Methods: The effect of fipronil on the apoptosis and necrosis of PC12 cells of 3.13 x 10(-6), 1.