Figure 7From: Protease-activated receptors in the Achilles tendon–a potential explanation for the excessive pain signalling in tendinopathy Double stainings for PARs and substance P. A-D shows PARs [1-4] and E-H shows corresponding SP-staining; PAR-1 (A) is co-localised with SP-positive nerve fibres (E) (arrows). The same was seen for PAR-2 (nerve fascicle in B&F), PAR-3 (nerve fascicle in C&G) and PAR-4 (D&H, arrows show perivascular nerve fibres).Back to article page