Upcoming testing for donors to children sick with cancerTesting to be held in Jerusalem on Tuesday.Petri dish [Illustrative](photo credit: REUTERS)
![Petri dish [Illustrative]](https://images.jpost.com/image/upload/f_auto,fl_lossy/q_auto/c_fill,g_faces:center,h_720,w_1280/262175 "Petri dish [Illustrative]")