Why is feline leukemia contagious but human leukemia isn’t?
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There are viruses that can lead to the development of different types of blood cancers. Epstein-Barr infection is notoriously associated with the development of different kinds of lymphomas, such as Hodgkin’s lymphoma, but also lymphomas of T cells, natural killer cells, etc…
Human T-cell lymphotropic virus (HTLV) infection can lead to the development of leukemia. Apparently here is some evidence linking hepatitis C virus to the development of a lymphoma of B cells.
Lymphomas are blood cancers that manifest as masses with a primary location in lymph nodes. Leukemias are blood cancers that aren’t solid and are primarily located in blood and bone marrow.
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