Possible Clues:

• The hollows one knows there of antrim, by the sound of them
• Slogans sides put out? They are hollow
• Cavities — a rant (anag)
• Slogan not initially found in Chambers
• Natural cavities and hollows in bones
• Hollow spaces made by insect on top of drawer
• A rant affected parts of the stomach
• Organ transplants within body cavities
• Hollow areas in the Appalachian Trail
• Organ transplant's helping bone cavities