pie-1 promoter

Hello everybody,

I would like to know if pie-1 promoter is expressed in all embryonic stages, and if not, where is it expressed. I’ve looked for it in wormBase, but the answer is a little bit messy.
Can anybody who have used it, please tell me when and where is it expressed?

Thank you in advance for your help :slight_smile:

http://www.wormbook.org/chapters/www_transgenic/transgenic.html

This wormbook chapter will be useful.

Thank you very much! :slight_smile: