the first irp of human pituitary gonadotrophins ( fsh/lh ) for bioassay ( 69/104 ) and the 1st irp of human pituitary luteinizing hormone ( lh ) for immunoassay ( 68/40 ) were fractionated by an electrofocusing technique in a sucrose density gradient and the profile of biological and immunological activities was determined .
C0018066
pituitary gonadotrophins
C0023607
pituitary luteinizing hormone