7. Tumor initiation occurs in aa. single protein molecule.b. single cell.c. few cells.d. single tissue.
b. single cell.
Tumor initiation occurs in a single cell. This cell undergoes genetic and epigenetic changes that cause it to develop into a tumor. These changes can be caused by various factors including environmental factors, exposure to carcinogens, or genetic mutations. Once this single cell undergoes these changes, it begins to divide and form a mass of cells that continue to grow and divide, eventually forming a tumor.
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