Given a statement and question, generate the answer to the question such that the answer is contained in the statement.

[Q]: statement: Healing of breaks requires cells specialized in bone remodeling, question: What does healing of breaks require cells specialized in?
[A]: bone remodeling


[Q]: statement: research are often done where chemicals are prepared, question: What type of chemicals are often used in research?
[A]: chemicals


[Q]: statement: most species go through vulnerable stages after birthing, question: What stage do most species go through after birthing?
[A]:
vulnerable