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.
FELINE GREENIESÂ® PILL POCKETSÂ® Treats have a 12 month expiration date on each pack. We preserve the product for freshness and flush each package with nitrogen to prevent oxidation. Nitrogen is an inert gas and is widely used to preserve the product freshness, including those for human consumption as well as for cats.