This prompted some researchers to start looking for wholesale amino acids supplier hemoglobin solutions and other synthetic oxygen carriers. Synthetic hemoglobin-based mostly merchandise are produced from hemoglobin harvested from an E. coli bacteria pressure. The challenge in creating a hemoglobin-primarily based artificial blood is to change the hemoglobin molecule so these issues are resolved. However, the established blood financial institution system worked so effectively research on blood substitutes waned.