Highly complex immunoassays that identify and quantify many different antigens simultaneously need high-resolution imaging capability. A simple, low-cost technique could be music to our ears.

Evolutionary studies tend to focus on alterations in proteins. But evolutionary change can often occur through modified gene expression, a process that is now under investigation with species-specific microarrays.

A molecular motor in a liquid-crystal film uses light to turn items thousands of times larger than itself.