Image

Bacteria.

Bacteria under a microscope with scale measurement.

Bacteria are single-celled microscopic organisms. While most bacteria are harmless, some are pathogenic and cause us harm.

Acknowledgement: Centers for Disease Control and Prevention, Dr Ray Butler

Rights: Centers for Disease Control and Prevention, Dr Ray Butler
Published: 17 July 2018,Updated: 17 July 2018Size: 1.08 MB