In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.

Question: Regarding the stability of the drugs of a proteinaceous nature of biotechnological drugs, we can say: 
 Options:  <0> Which is strongly dependent on pH. <1> That is little affected by ionic strength. <2> That being generally so high does not usually give problems in the formulation. <3> That its maximum value occurs at the pH value of lower solubility. <4> That has a slight dependence on the temperature.
pharmacology

Question: Indicate in what clinical situation would NOT indicate beginning interferon beta in a patient diagnosed with multiple sclerosis: 
 Options:  <0> Multiple recurring outbreaks. <1> Bad response to corticosteroids in outbreaks. <2> Having suffered a single outbreak of the disease with sequelae. <3> Be over 50 years old <4> A progressive primary clinical form.
medicine

Question: The hormonal stimulation of the formation of the second messenger inositol 1,4,5-trisfosfato (IP3) quickly leads to the release of what other intracellular messenger: 
 Options:  <0> Cyclic AMP. <1> Prostaglandin <2> Calcium. <3> Leukotriene <4> Thromboxane

chemistry