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: The Merkel cells are:
Options: <1> Secretors of neuropeptides and sensory. <2> Secretors of mucus. <3> Migratory <4> From Schwann. <5> Fibroblasts.
[A]: 1

[Q]: Question: In relation to intoxication by anticholinergic agents, point out the correct answer.
Options: <1> In its treatment, atropine is used. <2> The presence of grade III or IV encephalopathy, acute renal failure and severe coagulopathy indicate liver transplantation. <3> Dantrolene is indicated in case of seizures. <4> The basic treatment consists of the repeated administration of activated charcoal and support measures. <5> The decrease in plasma cholinesterase confirms the diagnosis.
[A]: 4

[Q]: Question: Regarding the phases of the clinical development of a drug, which of the following characteristics does NOT correspond to a clinical trial in phase 2?
Options: <1> They are exploratory therapeutic studies. <2> They are performed in a large number of patients (between 100 and 1000). <3> They are used to delimit a range of therapeutic doses. <4> The informed consent of the patients is required for their inclusion in the study. <5> They are usually of short duration.
[A]:
2