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.
Best Answer: Yes they do. Each dressing/bandaid is sterile in its package until it is opened. After the expiration date the dressing is no longer sterile. All sterile bandages have expiration dates. Usually the date is listed on the box and not each bandage. The dating is more cost effective this way. Source(s):