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.
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Question:  Cerebral blood flow ( CBF ) was measured with continuous arterial spin - labeling perfusion magnetic resonance ( MR ) imaging in 14 children with sickle cell disease and seven control subjects .

Answer: blood


Question:  In newborn pigs , sympathetic nerves may attenuate hypertension - induced increases in blood flow to the cerebrum , but do not appear to affect flow to the rest of the brain .

Answer: blood


Question:  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 ] .

Answer:
Plasma


