RT Book, Section SR Electronic(1) A1 Avery, Paul YR 2017 T1 Cytology T2 BSAVA Congress Proceedings 2017 PB British Small Animal Veterinary Association DO 10.22233/9781910443439.26.3 UL https://www.bsavalibrary.com/content/chapter/10.22233/9781910443439.ch26sec3