Letters that make TRF
f, r, t are letters that make 'TRF'
1 possible definitions for 'TRF'
Under this definition, trf is a noun and has the following properties:
thyrotropin-releasing hormone, TRH, thyrotropin-releasing factor, protirelin have the same meaning as 'TRF'
'TRF' can be a type of hormone, endocrine, internal secretion.