Possible Clues:

• Controversial medical topic
• Biological building blocks
• Subject of some medical research ... or a description of this puzzle's theme?
• Check rooms in monastery for controversial sources of therapy
• Subversive groups that research challenging academic subjects?
• Biological building blocks stop oxygen being withdrawn from instruments
• Subject of some biomedical research
• Stop rooms producing biological material for research?
• Versatile body builders
• Organic units having the ability to regenerate tissue