When incompatible blood is given, antibodies and complement in the recipient plasma attack the antigens on the donor RBC. Hemolysis ensues The antigen-antibody complex activate the Hageman factor (factor XII), which acts on the kinin system to produce bradykinin
Still it is not advisable to take it after the expiry date written on the bottle. This is just for your information to let you know that you are safe. Anyway Saline Nasal spray is not going to do any harm even if you used an expired one. So forget about it.
mafibisha DIS Veteran Joined: Mar 9, 2002. Messages: 2,803. How long past the expiration date do you use it? I'm making a fab salad later tonight for dinner (DH and kids away) and just realized my fave bottle has expired! I'm so bummed! It smells and looks okay --- it expired in April though ---.