Langerhans cells are dendritic cells (antigen-presenting immune cells) of the skin, and contain organelles called Birbeck granules. They are present in all layers of the epidermis and are most prominent in the stratum spinosum.
This ratio is approximately a one to one ratio, meaning that a person's arm span is about equal to their height. There are many more human body ratios; some are independent of age, and others change as we grow from a baby to an adult I hope this is correct
The division of something conceptually into two opposed or contrasted aspects, or the state of being so divided. Or .
the quality or condition of being dual; duality.
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Schools are being closed until summer because of the coronavirus. When we go back to school we might have to wear masks. We might have to put hand sanitizer every 2 seconds.
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