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  2. Membrane lipid - Wikipedia

    en.wikipedia.org/wiki/Membrane_lipid

    The bilayer formed by membrane lipids serves as a containment unit of a living cell. Membrane lipids also form a matrix in which membrane proteins reside. Historically lipids were thought to merely serve a structural role. Functional roles of lipids are in fact many: They serve as regulatory agents in cell growth and adhesion.

  3. Glia - Wikipedia

    en.wikipedia.org/wiki/Glia

    In general, neuroglial cells are smaller than neurons. There are approximately 85 billion glia cells in the human brain, [8] about the same number as neurons. [8] Glial cells make up about half the total volume of the brain and spinal cord. [27] The glia to neuron-ratio varies from one part of the brain to another.

  4. Cell (biology) - Wikipedia

    en.wikipedia.org/wiki/Cell_(biology)

    A human cell has genetic material contained in the cell nucleus (the nuclear genome) and in the mitochondria (the mitochondrial genome). In humans, the nuclear genome is divided into 46 linear DNA molecules called chromosomes, including 22 homologous chromosome pairs and a pair of sex chromosomes. The mitochondrial genome is a circular DNA ...

  5. N-Acetylneuraminic acid - Wikipedia

    en.wikipedia.org/wiki/N-Acetylneuraminic_acid

    N-Acetylneuraminic acid (Neu5Ac or NANA) is the predominant sialic acid found in human cells, and many mammalian cells. Other forms, such as N-Glycolylneuraminic acid , may also occur in cells. This residue is negatively charged at physiological pH and is found in complex glycans on mucins and glycoproteins found at the cell membrane .

  6. Astrocyte - Wikipedia

    en.wikipedia.org/wiki/Astrocyte

    When the glial cells were injected into the injury of the adult rat's spinal cord, astrocytes were generated by exposing human glial precursor cells to bone morphogenetic protein (bone morphogenetic protein is important because it is considered to create tissue architecture throughout the body).

  7. Keratinocyte - Wikipedia

    en.wikipedia.org/wiki/Keratinocyte

    In humans, they constitute 90% of epidermal skin cells. [1] Basal cells in the basal layer ( stratum basale ) of the skin are sometimes referred to as basal keratinocytes . [ 2 ] Keratinocytes form a barrier against environmental damage by heat , UV radiation , water loss , pathogenic bacteria , fungi , parasites , and viruses .

  8. 2 Stocks to Buy Before 2025 - AOL

    www.aol.com/2-stocks-buy-2025-003155229.html

    The latest iOS 18.2 with new Apple Intelligence features may have underwhelmed thus far (Genmoji and Image Playgrounds alongside ChatGPT are fine additions, but nothing jaw-dropping), but it's ...

  9. Monocyte - Wikipedia

    en.wikipedia.org/wiki/Monocyte

    In general, monocytes and their macrophage and dendritic cell progeny serve three main functions in the immune system. These are phagocytosis , antigen presentation, and cytokine production. Phagocytosis is the process of uptake of microbes and particles followed by digestion and destruction of this material.