Have you ever wondered about fish blood and it's components? The following 2 studies are about platelets (thrombocytes). Platelets not only facilitate blood clotting, but also provide an important protective barrier, and can be used to determine the age of the Koi.
This article is about being able to use thrombocytes to determine Koi age, and also how thrombocytes kill ingested bacteria - CLICK HERE to read it.
This article is about how effectively thrombocytes protect Koi from fungal and bacterial disease - CLICK HERE to read it.