TASK DEFINITION: In this task, you are given a sentence. You are expected to write the name of the organism substances in the body mentioned in the input. Although there might be several correct answers, you need to write one of them.
PROBLEM:  The glycosylation level of heparin - citrate precipitable fraction of serum which predominantly contained low density lipoprotein ( G - LDL ) also correlated well with GSP and LDL - cholesterol levels .

SOLUTION: serum

PROBLEM:  We also established the rate assay for urinary DPPIV activity using Gly - Pro - DBAP .

SOLUTION: urinary

PROBLEM:  Plasma gelsolin can be considered an amateur chaperone , as it binds Abeta and not only inhibits its Abeta fibrillization but is also capable of degrading preformed Abeta fibrils [ 149 , 150 ] .

SOLUTION:
Plasma