6NF9:
reference: Examination and Reconstruction of Three Ancient Endogenous Parvovirus Capsid Protein Gene Remnants Found in Rodent Genomes., Callaway HM, Subramanian S, Urbina CA, Barnard KN, Dick RA, Bator CM, Hafenstein SL, Gifford RJ, Parrish CR, J Virol. 2019 Mar 5;93(6). pii: JVI.01542-18. doi: 10.1128/JVI.01542-18. Print, 2019 Mar 15. PMID: 30626673

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