Choanoflagellates envelop and digest still smaller cells. Ocean ecosystems depend on these predators to consume plant-like ...

Just as the human body serves as a habitat for bacteria and other microbes, diverse, tiny organisms known as protists host their own microbiomes.

Pathogens are infectious agents, such as a bacterium, virus, fungus or parasite, that cause disease when they colonize a host organism. Combined cryo-electron tomography and single particle ...