Ståhlberg A, Andersson D, Aurelius J, Faiz M, Pekna M, Kubista M, Pekny M.

Nucleic Acids Res. 2011 Mar;39(4):e24.

Defining cell populations with single-cell gene expression profiling: correlations and identification of astrocyte subpopulations.

The two subpopulation strongly differ in the (geometric) average of their transcript counts, and the whole population is better described by sum of two simple distributions than by a bimodal distribution.