Furthermore, human enhancement do not stop at replacing a human limbs but also treating incurable hereditary disease like Huntington's disease or disease which cannot be cured like HIV and Parkinsons. Human enhancement dwells into to the core of human genetic codes to provide an individual a normal life or better. This is also a part of human enhancement which is call genetic engineering or gene therapy where BioCentre(.) states that it alters the DNA of a cell which changes the behavior and the structure of the cell. Thus, this shows that any disease can be altered to profit for mankind where those who are suffering from this can obtain a normal life before it is too late. Furthermore, (2006) states that Ron Bailey argue that with this enhancement there are no fear of infectious disease like avain flu currently spreading or the incurable HIV-Aides currently still at large. Nzherald(2005) states that Australian scientist were able to stimulate immunity towards HIV virus by altering the virus. Furthermore, it was proven successful to increase the resistance towards the virus but it only done in mice. Therefore, human enhancement should be legalized so that it can be tested on humans so those who suffer from this disease maybe more resistance towards it and able to obtain a normal life rather than being humiliated to have the virus.