Science Articles

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What is a restriction enzyme

This image is a cartoon rendition of the EcoRI restriction enzyme. Two catalytic magnesium ions are shown as magenta spheres and are adjacent to the cleaved sites in the DNA made by the enzyme (depicted as gap...
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naproxen vs ibuprofen

  I recently argued with a coworker about the differences between ibuprofen, the compound use in drugs like Advil, and naproxen sodium, the active compound in Aleve. I asserted to my coworker the dr...
What is an ELISA assay and why is it performed?

What is an ELISA assay

ELIZA ASSAY In this 96 well plate the wells with the darker wells have a greater concentration of a specific protein than lighter wells. Any well with no color can be considered to have none of the specific ...
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How is blood pressure measured in small animals?

  How is it that pharmaceutical companies can develop drugs for humans that lower their blood pressure? Drugs like Lipitor, Levacor, Zocor, and other blood pressure reducing drugs were all tested fi...

What are the four basic tissue types?

Groups of cells collectively organize into a structure known as a tissue. The properties tissue is determined by the different cell types that form it and there are generally four types of tissue. Each tiss...