title: The formation and "decay" of XIIa.
mesh_terms: D001578:Benzopyrans; D001792:Blood Platelets; D005174:Factor XII / Q000502:physiology*; D005227:Fatty Acids; D005615:Freezing; D006801:Humans; D066298:In Vitro Techniques; D010743:Phospholipids; D012492:Salts
chemical_list: D001578:Benzopyrans; D005227:Fatty Acids; D010743:Phospholipids; D012492:Salts; D005174:Factor XII