skeletal system development, ossification, proteolysis, collagen catabolic process, collagen metabolic process,multicellular organismal metabolic process, multicellular organismal catabolic process, multicellular organismal macromolecule metabolic process, bone development,
Cytoplasmic granule. Secreted, extracellular space, extracellular matrix . Stored in intracellular granules.
Neutrophils.