This 25 g package of cereal grass media is designed for culturing protozoa including rhizopods, choanoflagellates, ciliates, and flagellates. The media contains dehydrated cereal grass leaves with natural vitamins A, B, C, and K. This culturing medium is recommended by the American Type Culture Collection (ATCC) and provides the nutrients needed to establish and maintain protozoan cultures for biology education and research. For laboratory use only.