When a maize plant is attacked by the fungus Ustilago maydis, tumor-like tissue growths occur at the site of infection. How the pathogen causes this response in its host has long been unknown. But a ...

Cheese fungus, head lice, human sperm, a bee eye, a microplastic bobble: scientific photographer Steve Gschmeissner has imaged them all under the probing lens of a scanning electron microscope (SEM).

This microscope photo provided by the Centers for Disease Control and Prevention shows a Fusarium sp. fungal organism in 1972. Lucille K. Georg / ASSOCIATED PRESS When most people think of dangerous ...