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What is guanine?

After my last post, many people wanted to know “What the heck is guanine?” Very simply, guanine is one of the four nitrogen-containing bases found in DNA. You’ve probably seen strings of letters representing DNA structure that look something like this: ATGGATGTCGACGGT and so on. The four letters represent the four bases: adenine, cytosine, guanine, […] Read more