@misc{indiciae4d291c003fc1, title = {Defective interfering particles with covalently linked [+/-]RNA induce interferon.}, author = {P I Marcus and M J Sekellick}, year = {1977}, doi = {10.1038/266815a0}, url = {https://pubmed.ncbi.nlm.nih.gov/194158/}, note = {Source identifier: 194158} }