Answer:
Lactoferrin, lysozyme and peroxidase.
Explanation:
Lactoferrin, lysozyme and peroxidase are the substances which are present in the saliva and tears and work as a first line of defense in the body against harmful microorganisms in humans and animals. Lactoferrin helps to protect the body fromagainst DNA or RNA based viruses such as rotavirus and HIV. Lysozyme is a type of enzyme which prevents the growth of bacteria by breaking down the cell wall of bacteria.
