Abstract
Summary
Approximately one thousand Sprague-Dawley white rats were subjected to the stress of a celiotomy at various intervals (0 to 30 days) before inoculation with Walker 256 tumor cells. The low resistance noted when cells were injected at the time of stress (as measured by a take of 90%) increased gradually from day to day reaching the control value (60%) by the eighth day, but continued to show an increased resistance for several more days, with a take of only 41% on the 18th day. The resistance decreased rather sharply to a take of 79% on the 20th day, coming back to the control level of 60% within the next few days.
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