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

Answer: 1

Question: Question: Pyruvate carboxylase is allosterically activated by one of the following compounds, what is it?
Options: <1> Pyruvate. <2> Acetyl-CoA. <3> Malate. <4> Oxalacetate. <5> NAD +.

Answer: 2

Question: Question: In a patient with hepatic cirrhosis and ascites, which develops a pleural effusion with the following data in the pleural fluid: LDH 45 U / L (serum 220 U / L), protein ratio pleura / serum 0.3 and ratio LDH pleura / serum 0.2. What would be the right attitude?
Options: <1> The study of the fluid with cell count, glucose, pH, ADA, cholesterol and culture should be expanded. <2> Blind pleural biopsy. <3> Diagnostic video-assisted thoracoscopy. <4> Empirical antibiotic therapy for suspected parapneumonic effusion. <5> Continue the treatment of your liver disease.

Answer:
5