Disease+of+the+Cells

Like normal cells, who listen to other cells to divide or don't divide, move or don't move, grow or don't grow, Cancer cells ingore signals to die and don't listen to signals.

Cancer cells keep dividing because since they don't listen to signals, they don't know when to stop.

For cells to stay alive they need to signals to tell them to stay alive and if they don't get that signal then they die and kill themselves example: If you put a cell in a dish- it dies and kills itself because it doesn't get the signal to stay alive

cells only divide when new cells are needed

Cell Division:

 * Allows cells to divide uncontrollably when cancer cells are in the body because they divide for unlimited number of times
 * PROTO-ONCOGENES AND TUMOR SUPRESSORS are two type of genes lead to uncontrollable growth
 * Telomeres also allow cancer cells to grow uncontrollably

[[file:Cancer+Angier Article.doc]]

 * Is a primary tumor. The colonist cells, taking all the nutrients in their adapted organ and starving their norma neighbors of air, sugar, and salts, blocking air passage ways and clogging conduits. When they cant take no more the tear open the surrounding cells and eat the skin off your bones.
 * Metastatic cells are always moving go into our blood cells and are very hard to study
 * There a two ways these cells can travel thought are body
 * One way a metastatic cell can travel through the body is to make themselves into a parasite by sliming down to bacterial dimensions by pinching off of their cytoplasm.
 * Another way a metastatic cells can travel through the body is "hitchhiking" on a red blood cells that goes into the safe pools within the tissue.
 * First sight seen
 * The first sight that metastasis generally occurs is in the virgin terrain feeding on the growth of hormones and factors where sites are typically seem.
 * Metastasis Occurs in Organs:
 * One piece of evidence we have is in breast cancer because it metastasis to bone tissue. It talks the calcium ions for breast milk
 * Malignant melanoma spreads readily to the brain, presumably because neural tissue and the melanocytes that give rise to melanoma both arise from the same class of cells during gestation.