C paired nitrogen bases. hope i help don't forget to go subscribe to king kevin on youtube its my channel i have 840 subscribers plz go subscribe and be active thank you.
Once a virus<span> infects one of your cells it begins to replicate. ... Both of them involve </span>invading<span> a cell called the host cell and reprogramming it to make copies ... proteins during entry and the </span>virus will<span> attach to the protein receptors on the </span>cell wall<span>.</span>
