Question on anatomy...?
Answer:
Well, this is just about an anatomy question, it is more a cell biology and medication question. But the answer is simple.
Cancer is the uncontrolled division of cell, so treatment of cancer involves preventing this reproduction (the goal of chemotherapies).
near the new cell being made white cell are easily mass produced to backing rid the diease and I just made that adjectives up ^_^.
Lots of possible answers here and the field is growing. First up is within oncology---treatment of cancers. Cancer roughly is abnormal and uncontrolled cell division, so lots of research is pouring within to develop drugs that can affect the cell cycle of reproduction to halt it and thus halt cancer. Next is in stem cell treatment---to grow alien cells to replenish dying ones or ones that own never formed because of a natal insult. It can also be used in miscellaneous immunologic diseases where we desire to lessening immune cels in autoimmune cases and increase them contained by immunodeficiency cases.
There are diseases like cancer that do cell divisions surrounded by the body in lay down to grow. With the knowledge of cell division or reproduction, one can stop or inhibit the "reproduction" of such pathological cell thereby limiting or eliminating their growth.
try gene treatment, by injecting cells near altered genes to cur or produce immunity against disease.
Mitosis (or meiosis if your chitchat about egg and sperm cells) next duplicates these 'altered' cells that`s why producing a whole body to be exact either resistant to a disease, or that can quarrel one.