Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Distribution of the number of particles per cell. The number of cells, ni, in each subpopulation of cells bearing i particles was plotted as a function of i, for experiments performed with (▪) or without (•) 0.1% sodium azide. The normalized frequency for a subpopulation of cells bearing i particles is equal to 
where νmax is equal to the highest frequency of the sample.
