In order to speed up healing of a wound of oral mucosa a patient was prescribed a drug that is a thermostable protein occuring in tears, saliva, mother's milk as well as in a new-laid hen's egg. It is known that this protein is a factor of natural resistance of an organism. What is it called?

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Correct answer

Saliva and tears contain antibacterial enzymes such as lysozyme which destroys the cellular walls of bacteria by destroying the peptidoglycan layer.

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