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Feline leukemia virus (FeLV) is one of the most significant viral threats to domestic cats, responsible for progressive immunosuppression, oncogenesis, and increased susceptibility to secondary infections. Despite six decades of research, FeLV remains a challenge due to its genetic variability, complex pathogenesis, and diagnostic difficulties. The infection presents in progressive, regressive, focal, and abortive forms, complicating clinical identification and requiring multi-faceted diagnostic approaches.
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Panteleienko et al. (2025) studied this question.
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