normal flora
how does residental normal flora protect the body against pathogens
A doctor will determine bacterial infections. There are normal flora in the body and a shift in this flora could suggest infection.
Longevity.
Yes
The throat is not sterile and normally has some bacteria in it. This is called the normal flora. This statement is generally found on the results of a throat culture where no disease causing bacteria were found.
Yes, usual flora, normal flora, and typical flora are all normal results.
there ara no microbial normal flora in the csf
You said that in your answer too. As the flora is normal, there is no harm
Normal flora cannot cause a "disease". But if normal flora is disrupted it can become a pathogen and then cause infection. Some diseases, like diabetes, can disrupt normal flora and cause infection, especially yeast infections on the skin or in the vagina of women.
normal flora
Normal microbiota
In general, your "normal" skin flora protect you from "rogue" flora which might do you harm.
how does residental normal flora protect the body against pathogens
yes
Yes, normal microbial flora can become virulent or pathogenic if the conditions are right. On outside of body normal flora is harmless, if it was to be ingested it would take the opportunity to do as much damage as possible.