Changes in the activity of adenosine deaminase and the content of polyamines in the blood of cats with breast cancerMaya Vakulenko, Natalya Akinina, Natalya Dobaeva, Elena Bakurova and Alexey ErmakovE3S Web Conf., 135 (2019) 01076DOI: https://doi.org/10.1051/e3sconf/201913501076