Feline leukemia virus is a retrovirus that infects cats. FeLV can be transmitted from infected cats when the transfer of saliva or nasal secretions is involved.
Lakeville Animal Hospital's, Dave Wolfthal, tells you all you need to know about feeding your cats, Feline Leukemia and AIDS, and Lyme Disease in your dog.

Furthermore, visual representations like the one above help us fully grasp the concept of Feline Leukemia And Apoptosis In Cats.
Feline leukemia virus is a common disease that affects about 2% of cats in the United States. It is spread cat-to-cat and leads to the destruction of the cats white blood cells and immune system.

Over time, Feline Leukemia may cause a decrease in blood cell counts and make a cat more prone to cancer and infections. Once a cat is infected, Feline Leukemia cannot be cured, and for many cats this disease can be fatal.

Abstract. Practical relevance Feline leukaemia virus (FeLV) is a retrovirus of domestic cats worldwide. Cats lacking strong FeLV-specific immunity and undergoing progressive infection commonly develop fatal FeLV-associated disease.
Feline leukaemia virus (FeLV) belongs to the retrovirus family of viruses, in a group known as oncornaviruses. Oncornaviruses can cause the development of cancers, among other diseases (in both people and animals). FeLV only causes disease in cats and was first discovered in 1964.