Lymph nodes often swell in one location when a problem such as an injury, infection, or tumor develops in or near the lymph node. Which lymph nodes are swollen can help identify the problem. 1  The glands on either side of the neck, under the jaw, or behind the ears commonly swell when you have a cold or sore throat.ymph nodes often swell in one location when a problem such as an injury, infection, or tumor develops in or near the lymph node. Which lymph nodes are swollen can help identify the problem. 1  The glands on either side of the neck, under the jaw, or behind the ears commonly swell when you have a cold or sore throat.
keratinocyte. [keratâ²inÅsÄ«tâ²]. Etymology: Gk, keras + kytos, cell. an epidermal cell that synthesizes keratin and other proteins and sterols. These cells constitute 95% of the epidermis, being formed from undifferentiated, or basal, cells at the dermal-epidermal junction.tymology: Gk, keras + kytos, cell. an epidermal cell that synthesizes keratin and other proteins and sterols. These cells constitute 95% of the epidermis, being formed from undifferentiated, or basal, cells at the dermal-epidermal junction.
Keratinocyte cells are the building blocks of the skin. They are the most common type of skin cell and make keratin, a protein found in skin, hair, and nails. Keratinocytes are knitted tightly together to form seams between the nerves of the skin and the underlying tissues of the epidermis.ound in hair, keratin is a protein produced by keratinocyte cells. Found in nails, keratin is a protein produced by keratinocyte cells. The stratum is the outermost layer of epidermis that contains dead keratinocyte cells. Pomegranate seed extract may be able to protect keratinocytes from UV damage.