in fact , no tumor cells were found in the thymuses of mopc-315 tumor bearers with methods that can detect 1 x 10 ( 3 ) tumor cells , indicating that if mopc-315 tumor cells metastasize at all into the thymus , the thymuses of mice bearing a large mopc-315 tumor contain fewer than 1 x 10 ( 3 ) tumor cells .
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the thymuses of
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thymus