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Herpesvirus ateles, a latent virus carried by spider monkeys, was inoculated into 12 cotton-topped marmosets. All of these marmosets died of malignant lymphoma, lymphoblastic type. Leukemia developed in 11 of these animals. Of 4 contact control marmosets, 1 also developed malignant lymphoma and leukemia, which indicated horizontal transmission.
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Hunt et al. (1972) studied this question.
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