@misc{indiciaebf0b48dee19b, title = {Reagentless substrate analysis with immobilized enzymes.}, author = {S J Updike and G P Hicks}, year = {1967}, doi = {10.1126/science.158.3798.270}, url = {https://pubmed.ncbi.nlm.nih.gov/6053885/}, note = {Source identifier: 6053885} }