Salk scientists implant human cells in monkey embryos as a step toward easing future transplants Salk Institute for Biological Studies professor Juan Carlos Izpisua Belmonte says engineering human and/or monkey cells to communicate with pig cells and eventually use them to help grow organs compatible with humans is “a far way away.” (Courtesy of Salk Institute for Biological Studies ) Print To better understand how human cells communicate with those from other animals and potentially ease the process of cultivating tissue and organs for human transplantation, scientists at the Salk Institute for Biological Studies in La Jolla have taken the next step in research of chimeras — organisms that contain cells from two or more species.