What does PER stand for?
PER stands for "pre-existing revertants"
How to abbreviate "pre-existing revertants"?
"pre-existing revertants" can be abbreviated as PER
What is the meaning of PER abbreviation?
The meaning of PER abbreviation is "pre-existing revertants"
What does PER mean?
PER as abbreviation means "pre-existing revertants"
