Table 4.

The specific situation of 12 clusters

Cluster ID	Size	Silhouette	Mean year	Cluster label
0	46	0.747	2008	Gata
1	46	0.66	2007	Pharmacokinetics
2	44	0.793	2000	Coralyne
3	31	0.941	1995	Antipyretic
4	31	0.867	2014	Pi3k-akt
5	30	0.788	2006	Reactive oxygen species
6	24	0.839	2008	Erk signaling pathway
7	23	0.817	2012	Neuroinflammation
8	17	0.813	2003	Vascular smooth muscle cell
9	14	0.903	2010	Hypoglycemic
10	10	0.889	1999	Therapeutic effect
11	8	0.934	1997	Superoxide dismutase