AP	Anaphylatoxin
C5aR1	C5a receptor
CatD	Cathepsin D
Col I/II	Collagen type I/II
CRP	Complement regulatory protein
CS	Complement system
EDTA	Ethylenediaminetetraacetic acid
FCS	Fetal calf serum
hAC	Human articular chondrocytes
HUVEC	Human umbilical vein endothelial cells
MAC	Membrane Attack Complex
MMP	Matrix metalloproteinase
OA	Osteoarthritis
OUMS-27	Okayama University Medical School-27
PRL	Prolactin
PRLR	Prolactin receptor