Kombucha tea. This is a drink produced by fermenting sweet tea using bacteria and yeast. It is thought to be able to boost the immune system.

---

Size: 3496px × 3000px
Photo credit: © OSCAR BURRIEL/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: alga, algal, aquatic, background, biological, biology, blue, botanical, botany, brilliant, ccac, collection, contrast, cresyl, culture, desmid, desmids, dic, differential, flora, freshwater, interference, life, light, micrasterias, micrograph, microorganism, microscope, microscopic, microscopy, nature, photomicrograph, phycological, phycology, pond, radiosa, single-celled, stained, unicellular