You know what it looks like… but what is it called?
TAKE THE QUIZ“factor 1”
We have one entry that includes the term factor 1.
insulin-like growth factor 1
noun: the juvenile form of insulin-like growth factor that is produced chiefly by the liver in response to growth hormone with production declining after puberty —abbreviation IGF-1
Love words? Need even more definitions?
Merriam-Webster unabridged