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.
I'm not sure that this is 400 words but this is what I came up with.
Procedure is very important
Leukotriene modifiers work by blocking the action of leukotrienes, one cause of the inflammation and nasal congestion associated with allergies. For those with allergies and asthma, leukotriene modifiers help keep bronchial tubes, airways to your lungs, from constricting.
Psychoanalytic type of theorist is most likely to assess people's personalities by having them draw pictures, in the hope that the drawings will reveal underlying personality characteristics.
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What is Psychoanalytic theory?</h3>
Psychoanalytic theory explain human behavior in respect of the interaction of various components of personality.
For example, A 20-year old, healthy and well built, has a irrational fear of mice. The fear makes him shake at the sight of a mouse or rat. He often finds himself in awkward situations because of the fear.
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