Which of the following are considered viral vaccines? (Select all that apply)

A. Interleukin is a type of cytokine that plays a role in the immune system, but it is not another name for immunoglobulin.
B. Antibodies are also known as immunoglobulins. They are proteins produced by B cells that recognize and bind to specific antigens to help neutralize or destroy pathogens.
C. Interferon is another type of protein that plays a role in the immune response, particularly in inhibiting viral replication, but it is not the same as immunoglobulin.
D. Antigen is a foreign substance that induces an immune response, but it is not synonymous with immunoglobulin.

A. The inguinal lymph nodes are not part of the hepatic portal system. The hepatic portal system refers to the venous system that directs blood from the digestive organs to the liver, while the inguinal lymph nodes are involved in immune function.
B. The inguinal lymph nodes do not line the entrance of the spleen. The spleen is located in the upper left abdomen and has its own set of immune cells but does not directly connect to the inguinal lymph nodes.
C. The inguinal lymph nodes are located in the groin area. They are part of the body's lymphatic system and help filter lymph fluid from the lower extremities and genital region.
D. Kupffer cells are specialized macrophages found in the liver, not in the inguinal lymph nodes. These cells are involved in the filtration of blood and the removal of pathogens and debris.