Given the task definition and input, reply with output. 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: 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