Comparison of three animal viruses with circular single-stranded DNA genomes

@article{Todd1991ComparisonOT,
  title={Comparison of three animal viruses with circular single-stranded DNA genomes},
  author={Daniel Todd and Frank D. Niagro and Branson W. Ritchie and Walter P. Curran and Gordon M Allan and Phil D. Lukert and Kenneth S. Latimer and Walstine L Steffens and M S Mcnulty},
  journal={Archives of Virology},
  year={1991},
  volume={117},
  pages={129-135}
}
No common antigenic determinants and no DNA sequence homologies were detected when three animal viruses, chicken anaemia agent (CAA), porcine circovirus (PCV), and psittacine beak and feather disease virus (PBFDV), all of which possess circular single-stranded DNA genomes, were compared. Negative contrast electron microscopy showed that PCV and PBFDV particles were 30% smaller than CAA particles and lacked the surface structure of CAA.