cancer

• Cancer


  caused by mutations in genes that regulate mitosis

  • non-functioning proteins made causing uncontrolled cell division, leading to tumour
• Non-functioning proteins


  Causing uncontrolled mitosis
• Types of tumour


  • Benign
  • Malignant
• Benign tumour


  • Non-cancerous
  • Produce adhesion molecules (sticky substance), tumour cells stick together & particular tissue location in body
  • Surrounded by capsule, cannot spread stays in one plane
  • Can be removed by surgery
  • Grow at very slow rate
• Malignant tumour


  • Cancerous
  • Don't produce adhesive, not contained within capsule
  • Tumour breaks off, spreads to other parts of body (metastasis)
  • Grow rapidly
  • Develop own blood supply
  • Treatment includes chemo, radiotherapy
• Treatments 


  Such as chemotherapy and radiotherapy control/restrict cell division

  • kills normal cells too
  • but cancer cells divide more so more cancer cells killed than normal cells