When the body is invaded by bacteria, a virus or parasites, an immune alarm goes off, setting off a chain reaction of cellular activity in the immune system.
https://www.cancercenter.com/community/blog/2017/05/whats-the-difference-b-cells-and-t-cells
Please explain the use of "an" in "immune alarm".
Why can't we say "the immune alarm " as there is just one or we are specifying not any alarms but immune alarm?
"The" is possible. So are "our" and "your". But I am not sure there is only one so-called immune alarm.
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"The" is possible. So are "our" and "your". But I am not sure there is only one so-called immune alarm. This "immune alarm" is unscientific terminology, dumbed down for the layman, and necessarily so. The writer used "an" perhaps for that reason, but he would have been likely to use "an" in any event. It means some unspecified alarm, a sort of alarm the exact nature of which is unimportant at
JigneshbharatiWhy can't we say "the immune alarm " as there is just one
There isn't just one choice. The immune system is extremely complex and has many different types of detectors, alarms and responses.
https://www.medicalnewstoday.com/articl