It's not just about speed, though -- the new gear also supports interesting new services, including the ability to notify users when other users (for example, children) have entered the base station's range and reception of time- and location-sensitive coupons directly to phones presently attached to the cell.
Dr Lefkowitz started investigating the receptors by following the movement of radioactive isotopes attached to hormones within cells in the laboratory, trying to track down how signals get through cell membranes.