In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.

[Q]: Question: Of the following pairs of surface molecules, what is used by the virgin T lymphocytes to extravasate to the lymph node? 
 Options:  <1> CCR7 and L-selectin. <2> VCAM and L-selectin. <3> CCR7 and ICAM-1. <4> CCR9 and L-selectin. <5> CCR4 and VCAM-1.
[A]: 1


[Q]: Question: Which of the following characteristics is NOT typical of the contents of obsessive ideas? 
 Options:  <1> Sexual thoughts <2> Phonemes <3> Need for symmetry. <4> Pathological doubt. <5> Pollution.
[A]: 2


[Q]: Question: The bile produced by the liver is stored in the gallbladder from where it is secreted into the duodenum when the muscles involved receive this order in the form of hormonal and nervous signals mediated by: 
 Options:  <1> Colecitocinin and beta-adrenergic sympathetic activation. <2> Pancreozimine and beta-adrenergic sympathetic activation. <3> Secretin and parasympathetic activation. <4> Cholecystokinin and parasympathetic activation. <5> Secretin and alphaadrenergic sympathetic activation.
[A]:
4