Key points in human genome have been mapped by American researchers successfully and this is expected to aid in the development of treatments for cancer and a host of other diseases. Dana-Farber Cancer Institute doctors have been able to chart positions of nucleosomes throughout the human genome. This piece of information has found a place in Nature Biotechnology where gene micro array studies was used which was followed by computational data analysis for pinning down the locations of nucleosome. This discovery is expected to aid in treatment of cancer and a host of other diseases and probably also throw some light on cloning. It is the first study which has presented a global view on human nucleosome positioning. The study states that nucleosome positioning controls the genes and they can relocate if the requirements of a particular cell change.