Table 1.

Cell culture groups.

Cell type		Cell culture	Stimulated with RANKL; MCSF
1	PPFs (negative osteoclastic control)	ML	–
2	PBMCs (positive osteoclastic control)	ML	+
3	PBMCs	ML	–
4	co-culture (PPFs and PBMCs)	ML	–
5	co-culture (PPFs and PBMCs) *	ML	+
6	PPFs (negative osteoclastic control)	TW	–
7	PBMCs (positive osteoclastic control)	TW	+
8	PBMCs	TW	–
9	co-culture (PPFs and PBMCs)	TW	–
10	co-culture (PPFs and PBMCs) *	TW	+

*Only performed on dentin chips; ML, monolayer; TW, transwel.