Keratinocytes are the major cellular components of the epidermis. They are found in the four major epidermal strata: basale, spinosum, granulosum and corneum. Explain the characteristics of and the changes in the keratinocytes as they journey from the deepest to the most superficial epidermal strata.

Q: How long does it take a keratinocyte to reach the stratum corneum from the stratum basale?

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