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.

Q:  Lactotransferrin inhibits ADP - induced platelet aggregation at concentrations down to 5 nM , which can be reached in the plasma after leukocyte degranulation .

A: plasma
****
Q:  The injury to the airway can create binding sites for bacteria in the basement membrane of the bronchial tree and the stimulation of the secretion of mucus , which then stagnates and can create potential sites for bacterial adherence .

A: mucus
****
Q:  None of the samples collected at necropsy were positive for E . coli O157 .

A:
samples
****