instruction:
In this task, you will be given sentences in which your task is to recognize the name of the organ of the body. An organ is a collection of tissues that structurally form a functional unit specialized to perform a particular function. Although there might be several correct answers, you need to write one of them.
question:
 Two siblings presented with typical clinical features of congenital pulmonary alveolar proteinosis ( PAP ) .
answer:
pulmonary


question:
 Increased levels of these cytokines were also found in suprahepatic inferior vena caval blood , but were correlated with the higher portal vein levels , suggesting a gradient from abscess wall to portal vein into the systemic circulation via the liver .
answer:
liver


question:
 In summary , defense mechanisms against oxidative stress in the brain differ with age .
answer:

brain