Immune System Without A Spleen. Suggested dosage (based on dog’s size) The main parts of the immune system are:
Ii) are recruited in response to a diseased state; Igd — stays bound to b lymphocytes, helping them to start the immune response. The spleen is an organ found in all vertebrates.similar in structure to a large lymph node, it acts primarily as a blood filter.the word spleen comes from ancient greek σπλήν (splḗn).