As you can see from this activity, the immune system is very complex and is made of many components. in this section, place each immune component in the appropriate bin. a) nk cells. b) t lymphocytes. c) b lymphocytes. d) sebum. e) fever. f) sweat.

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Firstly, Sweat

Secondly, NK cells

Thirdly, B-lymphocytes and T-lymphocytes

Explanation:

Firstly, Sweat have two components, salt and water, which block bacterial, viral penetration into the body by immobilizing them.

Secondly, Natural Killer cells (NK cells) are white blood cells that attack any substance that enter into the body.

Thirdly, when infection occur B-lymphocytes make antibodies and memory cells while T-lymphocytes kill those substances with which B-lymphocytes  antibody is attached.

Reference: Aristizábal B, González Á. Innate immune system. In: Anaya JM, Shoenfeld Y, Rojas-Villarraga A, et al., editors. Autoimmunity: From Bench to Bedside [Internet]. Bogota (Colombia): El Rosario University Press; 2013 Jul 18. Chapter 2.

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.

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