http://ghr.nlm.nih.gov/condition/protein-s-deficiency http://ghr.nlm.nih.gov/condition/protein-s-deficiency http://ghr.nlm.nih.gov/condition/protein-s-deficiency Genetics Home Reference: Protein S deficiency Protein S deficiency http://ghr.nlm.nih.gov/condition/protein-s-deficiency Genetics Home Reference Protein S deficiency Genetics Home Reference: Protein S deficiency