We have not attempted to statistically compare absolute %RME2 values for different extracts or plastic products because extraction procedures, while similar, were not exactly the same for the two cell lines and the chemicals, much less their concentrations, in extracts were not known.
The powdered plant materials were packed in plastic bags until extraction.
For solid-phase extraction plastic filtration tubes (Supelco) were packed with Q-Sepharose Fast Flow and were cleaned in place with 150 mM TFA.
Parts of the plant samples were shade dried, ground using electric grinding mill (Laboratory mill, Arthuur A. Thomas company Philadelphia, USA), sieved by using sieve number 85, weighed using electronic balance and placed in plastic bags until extraction.
Furthermore, dicarboxylic acids can leach out from plastics during the extraction process, further adding to the ambiguity of their role in ionizing radiation.
The risk of complications is increased by operative techniques such as use of balloons and dilating catheters, tissue sampling, mechanical lithotripsy and wire baskets for stone extraction, and plastic and metallic biliary stents.
New taxes on cigarettes, soft drinks, strip clubs, plastic bags, and oil extraction all went to the dread "suspense file".
Cells were grown on coverslips for fluorescence staining and on plastic dishes for protein extraction.
Fresh young leaves were taken and stored individually at 4°C or dried and preserved with silica gel in plastic bags until DNA extraction.
The mini-plasmid extraction kit, plastic recycling plasmid extraction kit, and endotoxin-free plasmid extraction kit were purchased from TIANGEN China (Tiangen, Beijing, China).
