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The image displays chemical structures of three amino acids: Lysine, Arginine, and Histidine. These are presented as examples of "Polar, positively charged R groups." Each amino acid's structure shows the characteristic alpha-carbon, amino group, carboxyl group, and a specific side chain (R group). Lysine has a side chain with a positively charged amino group. Arginine's side chain features a guanidinium group, which is also positively charged. Histidine's side chain contains an imidazole ring, which can be positively charged. The text is oriented vertically on the right side of the image. The image appears to be a page from a textbook or scientific publication. There is no information present in the image that would allow for its location to be identified as Jalingo, Nigeria.
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