Table 6.

The top 20 keywords of IL-37 research.

Rank	Keywords	Counts	Centrality	Year	Rank	Keywords	Counts	Centrality	Year
1	Expression	165	0.02	2002	11	NF-κb	46	0.11	2002
2	IL-37	165	0.14	2013	12	Disease	40	0.09	2014
3	Inflammation	134	0.15	2011	13	Pathogenesis	36	0.10	2013
4	Cytokine	117	0.07	2004	14	T cell	32	0.07	2004
5	IL-1 family	69	0.21	2003	15	Member	31	0.08	2002
6	Cell	66	0.08	2002	16	Innate inflammation	31	0.05	2017
7	Immunity	58	0.08	2011	17	Inhibitor	29	0.10	2001
8	Receptor	54	0.10	2004	18	IL-18Rα	29	0.05	2016
9	Rheumatoid arthritis	54	0.06	2013	19	Dendritic cell	27	0.14	2012
10	Activation	52	0.08	2002	20	Suppression	27	0.02	2018