500
. As part of a new and intriguing line of research in behavioral medicine, researchers give mice saccharine-flavored water (a sweet flavor that mice love) and then follow it up with an injection of a drug that weakens the mice’s immune systems. Later, when these mice drank saccharine-flavored water, they showed signs of a weakened immune response. Research is currently underway to see if the reverse is possible (i.e., if conditioning can be used to increase immune functioning).
US: drug UR: weakened immune system NS: water CS: water CR: weakened immune system