In a recent study, researchers found that the deadly fungus Batrachochytrium dendrobatidis, which over four decades has pushed some frog species to the brink of extinction and is killing them at a recent annual rate of 3.7%, targets and inactivates the very cells designed to help stop it. Researchers found that frogs' lymphocytes, linchpin mediators responsible for calling in other immune cells, are essentially programmed by the fungus to self-destruct.

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