ns which it simulates, such as fibrosarcoma, lymphoma and squamous-cell carcinoma. Suceinic Acid Dehydrogenase (Succinate Dehydrogenase), SDH, has excited much curiosity in recent years, largely because of the reported possibihty by Kaufman and Hill (1960) that SDH activity in malignant cells might be significant since SDH was reduced in infected HeLa cells, a strain of human epithelium derived from carcinomatous tissue of the cervix.
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