Bovitech Limited is a New Zealand company that specializes in using genetic modification technology to grow pig kidneys to benefit more patients. Pig kidneys were chosen by the company because of their high structural similarity to human kidneys, but rejection by the human immune system prevented pig kidneys from functioning properly after transplantation. The company's founders have extensive experience in clinical research. So he is working on using gene-editing techniques to stop the tissue from rejecting it, so that pig kidneys can be better matched to human receptors.