Image 3 (IMAGE) Nanyang Technological University Caption The NTU-developed culture medium from the successful conversion of poultry biological waste from Leong Hup Singapore’s poultry farming, such as blood, which would serve as a cost-effective alternative to commercial mediums, which are based on bovine growth serum. Credit NTU Singapore Usage Restrictions No restrictions. License Public Domain Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.