Table 4. A story between PubMed IDs 19166837 (IL-6) and 3000421 (pADP-ribose).

PubMed ID	Title (followed by the Substance MeSH)	Chosen Sentence
19166837	(IL-6): Simvastatin reduces secondary brain injury caused by cortical contusion in rats: possible involvement of TLR4/NF-kappaB pathway.	This study was undertaken to evaluate the effect of simvastatin on the Toll-like receptor 4 (TLR4) and nuclear factor-kappa B (NF-kappaB) related signaling pathway and secondary brain injury in rats after traumatic brain injury (TBI).
20029451	(Chemokine CCL2):Role of CCL2 (MCP-1) in traumatic brain injury (TBI): evidence from severe TBI patients and CCL2-/- mice.	Cerebral inflammation involves molecular cascades contributing to progressive damage after traumatic brain injury (TBI).
11450092	(Poly(ADP-ribose) Polymerases): Traumatic brain injury in mice deficient in poly-ADP(ribose) polymerase: a preliminary report.	PARP contributes to neuronal cell death in vivo after cerebral ischemia/reperfusion , however , the role of PARP in the pathogenesis of traumatic brain injury (TBI) is unknown.
12686864	(1,5-dihydroxyisoquinoline): The effect of poly (adenosine diphosphate-ribose) polymerase inhibitors on biochemical changes in testicular ischemia-reperfusion injury.	Poly (adenosine diphosphate (ADP)- ribose) polymerase inhibitors have been used successfully to decrease ischemia-reperfusion injury in several organ systems.
3000421	(poly-ADP-ribose): Nonenzymic adenosine 5′-diphosphate ribosylation of poly (adenosine diphosphate ribose).	Poly (adenosine 5′ - diphosphate ribose) (poly (ADP-ribose)) is spontaneously ADP-ribosylated when it is incubated with nicotinamide adenine dinucleotide , especially in 0.5 M NaCl and at an alkaline pH.

Figure 1(d) shows the corresponding clique chain.