Solutions used in the process of extracting DNA are added in very small amounts. Pipets are used to carefully take very small amounts of liquid and put it into very small test tubes. They also have disposable caps so that you can use the same pipet with a different plastic attachment each time so that the DNA in one test tube will not contaminate the DNA in another.
Kelsie, what a great picture! I get a full sense of what you do in lab. Include more like this!!
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