AC	articular cartilage
ITI	inter-α-trypsin inhibitor
Pre-α-TI	pre-α-trypsin inhibitor
SPI	serine proteinase inhibitor
KPI	Kunitz protease inhibitor
CS	Chondroitin sulfate
HC	heavy chain (ITI)
OA	osteoarthritis
RA	rheumatoid arthritis
HA	hyaluronan
SLPI	secretory leucocyte proteinase inhibitor
TOM	Trappin ovine molecule
bT	biotinylated trypsin
TSG-6	Tumour necrosis factor-stimulated gene-6
GAG	glycosaminoglycan
KPI	Kunitz protease inhibitor
KS	Kaposi sarcoma
UTS	urinary trypsin inhibitor
BPTI	basic pancreatic trypsin inhibitor
IVD	intervertebral disc
ChD	chondrodystrophoid
Non-ChD	non-chondrodystrophoid