A single presentation of a sugar reward to Drosophila activates distinct subsets of dopamine neurons that independently induce short - and long - term olfactory memories (STM and LTM, respectively). (janelia.org)
There it correlates with gene repression, but likely only in distinct subsets of cells within each organ, (see Schultz et al., 2015). (alzforum.org)
However, new data suggests that there are additional distinct subsets of breast cancer. (articles.chicagotribune.com)