Table 1. Hallmarks of pit- and trench-forming OCs.

Osteoclastic hallmark	Pits	Trenches	References
Movement	NO	YES	[4,8,10,20]
Symmetry of resorption apparatus
• Actin	Ring	Crescent-like	[8,11]
• Exocytosis	Peripheral	Front side	[8]
• Endocytosis	Central	Back side	[8]
Balanced collagen & mineral clearance	NO (most often)	YES	[4,20] + Present work
Cavitation depth	Shallower (most often)	Deeper	Present work