Abstract
Summary
Liver tyrosine-α-ketoglutarate transaminase activity was not affected by Walker carcinosarcoma 256 in the early stages of tumor growth. During latter stages of tumor growth a 2-fold increase in liver tyrosine transaminase activity was noted. No change was observed in tyrosine transaminase activity in regenerating liver; therefore, it seemed unlikely that increased transaminase activity in the late stages of tumor growth resulted from an enhanced liver mitotic activity.
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