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]: Portal venous blood draining into the liver from the intra - abdominal abscess had increased levels of TNF - alpha , IL - 1beta , and IL - 6 in both sterile and septic groups compared with a control normal animal group .
[A]: blood

[Q]: Blood chemistry , clinical presentation , radiography , and echocardiography were carried out in all patients for univariate and multivariate analyses of all parameters .
[A]: Blood

[Q]: This reaction requires a desalting step which often represents a major obstacle , especially if the sample consists of limited amounts of a hydrophobic membrane protein .
[A]:
sample