@misc{indiciae59ef3f85de9c, title = {Letter: Microbial-antigen detection.}, author = {J Kohn}, year = {1974}, doi = {10.1016/s0140-6736(74)93293-0}, url = {https://pubmed.ncbi.nlm.nih.gov/4142987/}, note = {Source identifier: 4142987} }