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.
Answer:Chemical testing has high reliability and high validity.
Explanation:
Answer: That sounds great!
Explanation: your body needs sleep to restore the days information that you learnt and to 're -new' your brain and hormones etc. What you said is correct
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