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Chyle is a type of lymphatic fluid rich in fats absorbed from the intestines, but it is not the primary basis of all lymphatic fluid.

Secretions of lymph nodes contribute immune cells and filtering functions but do not form the main component of lymph.

MALT (Mucosa-associated lymphoid tissue) is involved in immune responses in mucosal membranes but does not form the basis of lymphatic fluid.

GALT (Gut-associated lymphoid tissue) includes Peyer patches, which are found in the lining of the small intestine and play a key role in immune surveillance of the gut.

MALT (Mucosa-associated lymphoid tissue) is a broader category that includes GALT as a subset, so Peyer patches are also part of MALT.

Peyer patches are part of the lymphatic system, contributing to the body's immune defense mechanisms.

Rejection syndrome typically refers to the immune system's rejection of transplanted organs or tissues, not a response to serum.

Kaposi sarcoma is a cancer associated with human herpesvirus 8 (HHV-8), most commonly seen in immunocompromised individuals, such as those with AIDS. It is unrelated to immune serum reactions.

Hay fever (allergic rhinitis) is an allergic reaction to airborne substances like pollen, not to animal-derived serum

Blood filtration is a key function of the spleen, as it removes pathogens and debris from the blood.

Destruction of old red blood cells occurs in the spleen, which acts as a graveyard for aging or damaged red blood cells.

Blood storage is also a spleen function; it can store blood and release it in case of hemorrhage or increased demand.

Proteins can be present in lymph, especially smaller ones that pass through capillary walls.

Water is a major component of lymph, making up the fluid part that helps transport cells and substances.

Lymphocytes are a key component of lymph, playing a central role in the immune response.

Autoimmunity is a malfunction of the immune system where the body attacks its own tissues — it is not a type of protective immunity acquired through infection or exposure.

Species immunity refers to natural resistance to certain diseases that affect other species (e.g., humans not being susceptible to some animal viruses), not immunity acquired through infection.

Passive immunity involves receiving antibodies from another source (like from mother to baby or via antibody-containing injections) and does not require the immune system to produce its own response.

Inguinal nodes are located in the groin area, not the neck.

Subclavian nodes are found near the clavicle (collarbone), closer to the chest, not specifically in the neck.

Palatine tonsil is located in the oropharynx (back of the throat), not in the neck, although it is part of the lymphatic system.

They attract phagocytes to the site of infection through chemotaxis, enhancing the immune response.

They promote inflammation by increasing vascular permeability and attracting immune cells.

They can destroy cells by forming the membrane attack complex (MAC), which creates pores in the membranes of pathogens, leading to cell lysis.

Right Tibial vessels drain lymph from the lower legs, which eventually drains into the thoracic duct, not the right lymphatic duct.

Right iliac vessels drain lymph from the pelvic region and also empty into the thoracic duct, not the right lymphatic duct.

Right femoral vessels drain lymph from the lower limbs, and their lymph also eventually drains into the thoracic duct.

Specific immunity refers to the adaptive immune response that targets particular pathogens, but it doesn't apply to the protection humans have against animal-specific diseases.

Nonspecific immunity refers to the general defense mechanisms (like skin or phagocytes) that protect the body from a broad range of pathogens, not specifically from animal diseases.

Active immunity involves the body producing its own immune response after exposure to a pathogen, but it does not specifically describe the protection from diseases of other