Zoology - Human Health and Diseases Question with Solution | TestHub

Cells sloughed from such tumors reach distant sites through blood, and wherever they get lodged in the body, they start a new tumor there. This property called metastasis is the most feared property of malignant tumors.

Several genes called cellular oncogenes (c-onc) or proto-oncogenes are found in normal cells which, when activated under certain conditions, could lead to oncogenic transformation of the cells.

The patients are given substances called biological response modifiers such as alpha-interferon which activates their immune system and helps in destroying the tumor.