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.
Macronuclear development in S. lemnae (adapted from [11,12]). The arrow indicates the time point of injection. DNA from injected cells was prepared either about 6 hours after injection or from vegetative cells; the arrowheads show these two time points.
