Select the incorrect statement regarding the temperature of the immune system. A. Interleukin-1 is a pyrogen, which can cause the neurons in the hypothalamus to raise the body's temperature, producing a fever. B. Fevers cause the liver and spleen to store sodium and potassium which bacteria need for their growth and metabolism. C. Fevers above 105∘∘F can be fatal. D. Fever contributes to the body's defense by stimulating phagocytosis E. When macrophages encounter invading cells, they release interleukin-1, which is carried to the brain by the circulatory system.

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Viral Infections

Viruses are abundantly found, minute entities that have genetic material enclosed within a protein coat. The proteinaceous material enclosing the genetic material of the virus is called a capsid. The genetic material could be either DNA (deoxyribonucleic acid) or RNA (ribonucleic acid). A virus is too minute to be looked at with naked eyes and therefore visualized with the help of a microscope. They are acellular entities that require a host for processes, such as replication, transcription, translation and multiplication. Plants, animals, and bacteria act as host wherein the virus reproduce. Viruses cannot multiply outside the host's body and thus are considered nonliving outside the host body.