Complements C1 to C5 are activated during endotoxin inactivation.

Orchitis is an inflammation of the testes with mild testicular pain or swelling. It results in infertility.

This is the correct option. Wandering macrophages are the macrophages that leave blood and migrate to an infected tissue. Peritoneal macrophages are wandering macrophages.

Whitaker syndrome is another name of autoimmune polyendocrine syndrome type 1. Its nine symptoms include photophobia, decreased skin pigmentations, visual difficulties, dysplastic fingernails, cataracts, corneal clouding, alopecia, vitiligo and chronic infections. 

Regulatory T-cells also known as suppressor and helper T-cells call in phagocytes to destroy bacterial cells.

Monocytes are the precursors of macrophages. They differentiate into macrophages.

Antibodies are the regulatory proteins released by the activated T-cells.

Killer T-cells recognise the antigens coupled to class I MHC molecules.

Immunosuppressive drugs (cyclosporin) prevent T-cells from responding to signals correctly by inhibiting signal transduction pathways.

Memory T-cells typically express the cell surface protein CD45RO. It is an essential regulator of T and B-cell antigen receptor signaling.

Inflammation of blood vessels throughout the body, swelling, redness, heat and pain takes place in Behcet's syndrome.

In X-linked agammaglobulinemia, B-cells are not generated. Due to this, antibodies are not formed and it manifests as a complete lack of antibodies in their bloodstream. It happens due to a mutation in X-chromosome.

Autoimmune thrombocytopenic purpura is characterised by a decrease in platelet count. ITP is an autoimmune disease with antibodies detectable against several platelet surface antigens.

Adjuvants do not accelerate the division of immune cells.

This is the correct match. Natural killer (NK cells) cells are leukocytes that attack and destroy tumor cells. Dendritic cells present antigens to T-cells. Mast cells are most often associated with allergy and anaphylaxis. Macrophages act as scavengers, ridding the body of worn-out cells and other debris.