Nele Sabbe, [17 Apr 2023 at 21:48:43]: If you want to use the serum for eye treatment for a giraffe, is it possible to use serum from another giraffe or does it need to be from the specific individual itself? Henry Labuschagne, [18 Apr 2023 at 06:54:13]: Nele. You can use serum from a different animal but better to use serum from the patient. If treating a corneal ulcer, I would do a TEF.