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.
Assay of conditioned medium for counting factor activity. countin cells were starved in the presence of either PBM alone (Buffer), or buffer conditioned by a high density of starved countin, Ax4 (WT), or smlA cells. The number of aggregates was counted after 20 hr. Bars, s.e.m.
