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: In mammals, Toll-like receptors (TLRs) are receptors: 
 Options:  <1> Signaling. <2> Antigenic <3> Of histocompatibility alleles. <4> Of phagocytosis. <5> Of chemokines.
[A]: 1


[Q]: Question: Which of the following statements is true with respect to the alkaloid morphine ?: 
 Options:  <1> It is an isoquinoline alkaloid extracted from straw of Papaver somniferum. <2> It is a benzylisoquinol alkaloid extracted from latex of Papaver somniferum. <3> It is a tracheal alkaloid extracted from leaves of Papaver somniferum. <4> It is a quinolizidine alkaloid extracted from capsules of Papaver somniferum. <5> It is a pyrrolidinic alkaloid extracted from roots of Papaver somniferum.
[A]: 2


[Q]: Question: The eudismic index is a parameter with pharmacological interest that expresses the relationship between: 
 Options:  <1> Two diastereomer drugs. <2> Two bioisostero drugs. <3> Two enantiomers <4> A drug and a prodrug, structural analog. <5> Two structural modifications, one hydrophilic and one lipophilic, of a certain drug.
[A]:
3