sterilization
Yes. Antibodies do prevent pathogens from infecting other cells.
washing hands
Yes
A surgical incision intended to treat or prevent an additional problem could be called a therapeutic wound. For example, a "stab" incision about 1" long is made during surgery only to insert a drainage tube, which helps prevent infection in a larger surgical site.
Protein (found in Meat and Nuts (and fingernails) as far as I know, so it should help.
osteoporosis and the white tick lines on your fingernails !
prevent the growth of microorganisms
It doesn't.
White blood cells ingest the pathogens to prevent them from harming the human body
The major reservoirs of pathogens include humans, animals, insects, and the environment. Pathogens can be carried and transmitted by these reservoirs, leading to the spread of diseases. It is important to identify and control these reservoirs to prevent the transmission of pathogens.
The pores on your skin help to prevent harmful pathogens from entering. Pathogens cause disease, infection and Cancer. By keeping these pathogens out, this is how pores protect you.
Swallowing fingernails is unlikely to cause appendicitis. Appendicitis is typically caused by a blockage in the appendix, not by ingesting foreign objects like fingernails. It is important to avoid swallowing non-food items to prevent potential health risks.