Role of extracellular matrix molecules in shell formation and structure

@article{Arias2001RoleOE,
  title={Role of extracellular matrix molecules in shell formation and structure},
  author={Jos{\'e} Luis Arias and M. Soledad Fern{\'a}ndez},
  journal={World's Poultry Science Journal},
  year={2001},
  volume={57},
  pages={349 - 357}
}
Avian eggshells are natural composite bioceramics containing organic and inorganic phases. The occurrence and role of particular collagens and proteoglycans in the eggshell and their pattern of secretion by the oviduct is discussed. While type X collagen, the main constituent of the shell membranes, functions to inhibit their mineralisation, mammillan, a mammillary keratan sulphate proteoglycan, is involved in nucleation of the first calcite crystals of the shell and ovoglycan, a unique… 
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