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:  Effects of hypertension and sympathetic denervation on cerebral blood flow in newborn pigs .

A: blood
****
Q:  The agonism of 5 - HT1A receptors , negatively coupled to cAMP , reduces IOP by decreasing the production of aqueous humor , like beta - receptor antagonists which , diminishing the content of cAMP at the postjunctional site , lowers the aqueous humor secretion with a consequent decrease in IOP [ 98 ] .

A: humor
****
Q:  If the microbial strain was only detected once for a sample , we then checked the second culture results in the suspected infectious sites .

A:
sample
****
