@misc{indiciae49a5477421b0, title = {Comparison of thymidine, fluorodeoxyuridine, hydroxyurea, and methotrexate blocking at the G1/S phase transition of the cell cycle, studied by replication patterns.}, author = {W Vogel and W Schempp and I Sigwarth}, year = {1978}, doi = {10.1007/bf00286962}, url = {https://pubmed.ncbi.nlm.nih.gov/153886/}, note = {Source identifier: 153886} }