What is cancer biology?
The normal cells have controlled growth. Movement in them is inhibited with contact. These differentiated cells have fixed life span. Their multiplication is carefully regulated. Occasionally, these controls are lost. Consequently the cell begins to grow and divide erratically resulting in a mass of cells termed as tumours. This abnormal mass of cells is referred to as neoplasm, which may be benign or malignant. By definition, cancer is a group of syndromes that are caused by mutations in somatic cells. Tumour is a purposeless growth of tissue that tends to be atypical of the parent, autonomous and aggressive. Study of tumours is called oncology. Tumors are of 2 types: malignant and Benign. Visit Biology Doubts page of Physics Wallah for more questions.