Multimedia Gallery
DNA Sequencing Process (Step 2)
Shown here is step 2 in the DNA sequencing process. After the target material has been transferred into eight-strip tubes and combined with fluorescent chemistry (see Step 1), it is placed in the thermal cycler where the four base chemicals that make up DNA--A (adenine), G (guanine), C (cytosine) and T (thymine)--receive fluorescent tags. The DNA sequencing process makes it possible for researchers to discover the amino acid sequence in a substance. [Image 2 of 5 related images. See Image 3.]
More about this Image
The work pictured in this series of images was performed at the DNA Sequencing Facility at Virginia Tech. Several of the researchers at the facility are National Science Foundation grantees. University facilities such as this one make it possible for students and faculty to perform hands-on research, make discoveries and earn awards and grants. (Year of image: 2000)
Credit: Gerald Baber, Virginia Tech
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