See more pictures of alternative fuel vehicles. You've probably heard about fuel cells. In 2003, President Bush announced a program called the Hydrogen Fuel Initiative (HFI) during his State of the Union Address.
Phenol-Chloroform Extraction. Purpose: Phenol-chloroform extractions are done when you need to purify DNA from a solution that also has proteins. The DNA will dissolve in the aqueous layer, and everything else will go into the non-aqueous layer.. Phenol:chloroform. 1  Add one equal volume of phenol:chloroform:IAA (found in 4C in room 263) to DNA solution. 2  The phenol:chloroform solution has two layers â be sure to take the bottom layer!!! 3  Mix gently; spin for 5 minutes at max speed. 4  Remove aqueous layer (top layer) to a new tube.
DNA extraction is the process of obtaining pure DNA from a sample, either from living or non-living cells, such as those found in viruses. This technique is commonly used in the medical field, where early detection of diseases and disorders significantly increases the survival rates of afflicted individuals.