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Cell membrane
- ... envelope (black outer ring) until a potential host cell is found. The envelope is made up of several proteins, including envelope protein (blue spikes); membrane protein (yellow spikes); and spike glycoprotein or spike ...
- ... work? The immune system is a network of cells and organs that work together to fight infections and protect the body against diseases. For example, the skin and mucus membranes help prevent harmful germs from entering the body, ...
- ... it’s a protein called “dystrophin” that keeps muscle membranes stable and strong. Without it, damage to muscle cells build up causing the muscles to get weaker ...