Answer:
They protect the body from infectious agents.
And
They signal the immune system to destroy pathogens.
Explanation:
I HOPE THIS HELPS
(sucrose) H22 : O11 = 2 : 1
Keratin is an intracellular fibrous protein that gives hair, nails, and skin their hardness, strength, and water-resistant properties. The keratinocytes in the stratum corneum are dead and regularly slough away, being replaced by cells from the deeper layers
Hope this helped!
Good luck :p
~Emmy <3
