Sialic acid is a conventional term for a group of derivatives of neuraminic acid, an acidic sugar with a nine-carbon backbone. It is likewise the name for the most widely recognized individual from this gathering, N-acetylneuraminic acid. Sialic acids are found generally conveyed in animal tissues and to a lesser extent in different organisms, running from fungi to yeasts and microbes, for the most part in glycoproteins and gangliosides. That is on the grounds that it appears to have showed up late in evolution. In any case, it has been seen in Drosophila embryos and different insects and in the capsular polysaccharides of specific strains of microbes. For the most part, plants don't contain or show sialic acids.