The most common and most likely answer to this crossword clue is the 8 letter word IMPLANTS
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More clues leading to the result IMPLANTS
Buddy explains!

The straight part
We know that "Introduces" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case introduces = implants.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does IMPLANTS mean?
IMPLANTS noun- Anything surgically implanted in the body, such as a tissue graft or prosthesis, particularly breast implants.
- (travel) A representative of a travel company, working within the office of a large client and exclusively dealing with that client.
- To fix firmly or set securely or deeply.
- To insert (something) surgically into the body.
- Of an embryo, to become attached to and embedded in the womb.