OP50 meaning

Model Organism: Worms Scientific Discussion
1

Hello,

I’m looking for some background information on OP50, and although there are a lot of specifics about the strain and its origin, I cannot determine where the “OP” or “50” come from. This question was posted several years ago with no response and I cannot find this information in the literature. I’m only interested in anything definitive, not “could be” which is mostly what I’ve found online.

Thank you

2

This old gazette states that it is a mutant of E. coli B (Berkeley strain).

It seems the person who did the mutant screen should know, whoever that is.

http://www.biosciences-labs.bham.ac.uk/may/Publications_files/May%20et%20al,%20WBG.pdf