@misc{indiciae651dabd42a08,
  title = {Improved gene expression by a U3-based retroviral vector.},
  author = {B F Chen and C L Hsieh and D S Chen and L H Hwang},
  year = {1992},
  doi = {10.1016/0006-291x(92)91197-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/1567440/},
  note = {Source identifier: 1567440}
}