The molar ratio of calcium to magnesium in the shell of the hen's egg during formation.
D000818:Animals; D002113:Calcification, Physiologic; D002118:Calcium / Q000032:analysis*; D002645:Chickens; D004531:Eggs / Q000032:analysis*; D005260:Female; D008274:Magnesium / Q000032:analysis*; D013057:Spectrum Analysis
D008274:Magnesium; D002118:Calcium