11. The developing callus grows when supplied with yeast extract , coconut milk, or old DNA preparations. 12. The addition of thiamine or yeast extracts promotes sporulation of " M . gallinae ". 13. Promite is made from vegetables and yeast extract , and is naturally high in various B vitamins. 14. Some, such as yeast extracts , contain enough tyramine to be potentially fatal in a single serving. 15. A brewing byproduct of Guinness, Guinness Yeast Extract ( GYE ), was produced until the 1950s. 16. Culture-based studies have shown the archaeon to only grow on trypticase peptone, casein, and yeast extract . 17. The only product marketed under the Oxo brand in South Africa was a yeast extract based spread. 18. The species uses sugars poorly unless yeast extract and either rumen fluid or Tripticase peptone are available. 19. The volunteers found that there was widespread malnutrition, which they helped fight by making pills of'Marmite'yeast extract . 20. Nevertheless, it was known that yeast extracts can ferment sugar even in the absence of living yeast cells.
