Examlex
When the typewriter and telephone were first used in business in the 1880s,
Dermis
Middle layer of skin consisting of connective tissue that gives skin its flexibility.
Estrogen
The primary female sex hormone responsible for development and regulation of the female reproductive system and secondary sex characteristics.
Skin Changes
Alterations in the skin's appearance or texture, which can occur due to aging, environmental factors, or health conditions.
Color Discrimination
The ability to distinguish between different wavelengths of light, perceived by humans as colors.
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