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: Relating components of human milk and immune system, it is FALSE that:
Options: <0> Lactoferrin protects against infections due to its ability to bind iron. <1> The casein peptides have antimicrobial and immunostimulant activity. <2> Cytokines modulate the immune system in childhood. <3> Complex oligosaccharides can be false receptors for bacteria in the intestine. <4> Lysozyme degrades the cell walls of gram-negative organisms.
pharmacology