In 1985, graphic novelist Alison Bechdel came up with criteria for whether she'd watch a movie. It's become known as the Bechdel test, and it's surprisingly hard for films to pass these days. After ...

Creating characters that encompass the rich diversity of humanity is particularly pertinent to screenwriting, where representation really does matter. However, gender inclusivity in media has long ...

If your doctor suspects you have one of several diseases, they may want to perform an “enzyme-linked immunosorbent assay” test. This is more commonly known as an ELISA test, and it can help to confirm ...

Antigen tests can identify the presence of antigens within the body, which are substances that cause immune responses, such as the release of antibodies. The immune system, and antibodies specifically ...

What is a cell proliferation assay? Cell proliferation assays are in vitro techniques. Methods differ in how sensitive they are, their compatibility with high-throughput analysis, and their ...

Protein S activity is a test to judge your risk of blood clots. Blood clots that form in the veins are dangerous. Protein S is a substance that controls the blood clotting mechanism and prevents ...

A polymerase chain reaction (PCR) test detects genetic material from a pathogen or abnormal cell sample. Ways of collecting samples include a nasal swab, a saliva swab, or taking a sample of blood.

If taking your dog out for a walk or getting up the stairs feels harder than normal, your doctor may order something called a stress test. And the process is a bit different than you might expect. A ...