A photo of a cyst nematode's head viewed through a high-power microscope shows its esophageal glands, which produce effectors it uses to infect host plants. The image was digitally edited to highlight ...

A University of California, Riverside team of scientists has found that Toxoplasma gondii, a common parasite affecting up to one-third of the global population, is far more complex than previously ...

An ovarian cyst rupture can cause sudden pain, bleeding, and other symptoms. Learn the signs, treatments, and what to expect ...

Medically reviewed by Susan Bard, MD Key Takeaways A pilonidal cyst is a painful lump located at the base of the spine at the top of the buttocks.Symptoms can include a painful lump, discharge, and ...