Acute Hepatic Failure in Dogs. Acute hepatic failure is a condition characterized by the sudden loss of 70 percent or more of the liver's function due to sudden, massive, hepatic necrosis (tissue death in the liver).
Key Points. Secondary (acquired) immunodeficiencies are much more common than primary (hereditary) immunodeficiencies. Primary immunodeficiencies can affect humoral immunity (most commonly), cellular immunity, both humoral and cellular immunity, phagocytic cells, or the complement system.
Which of the following is a characteristic of a secondary immune response? - A secondary immune response is slower than a primary immune response. - A secondary immune response is started by naÃ¯ve lymphocytes, while a primary immune response is initiated by memory cells. - A secondary immune response lasts longer than a primary immune response.