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.
While both programs supplement the income of individuals who are unable to work due to a medical disability such as blindness, SSDI and SSI serve two distinct populations. The main difference between SSDI and SSI is eligibility. SSDI is available to those who have paid into the system through taxable income. SSI, on the other hand, serves as a safety net for those who do not qualify for SSDI and have limited means.