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[Morphological changes in tongue cancer after cryosurgery].

Tca 8113 (human tongue cancer cell line) cell transplanted tumors in nude mice were treated with cryosurgery for three freeze-thaw cycles. Tumor samples were obtained by biopsies pre- and post-cryosurgery for morphological study. The results showed intercellular adhesion damage, nuclear pyknosis, cell death, etc. One week after, the deep parts of the frozen samples were similar to that of the untreated ones. Our study indicates the change of biomembrance may be also important as of nuclei in cell death and may play an important role in the treatment of cancer by cryochemistry.