| D008010 |
Lichen Planus |
An inflammatory, pruritic disease of the skin and mucous membranes, which can be either generalized or localized. It is characterized by distinctive purplish, flat-topped papules having a predilection for the trunk and flexor surfaces. The lesions may be discrete or coalesce to form plaques. Histologically, there is a "saw-tooth" pattern of epidermal hyperplasia and vacuolar alteration of the basal layer of the epidermis along with an intense upper dermal inflammatory infiltrate composed predominantly of T-cells. Etiology is unknown. |
Cutaneous Lichen Planus,Lichen Planopilaris,Lichen Ruber Planus,Mucosal Lichen Planus,Lichen Rubra Planus,Lichen Planus, Cutaneous,Lichen Planus, Mucosal,Planopilaris, Lichen |
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| D009260 |
Nail Diseases |
Diseases of the nail plate and tissues surrounding it. The concept is limited to primates. |
Disease, Nail,Diseases, Nail,Nail Disease |
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| D009262 |
Nails |
The thin, horny plates that cover the dorsal surfaces of the distal phalanges of the fingers and toes of primates. |
Fingernails,Toenails,Fingernail,Nail,Toenail |
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| D010944 |
Plants |
Multicellular, eukaryotic life forms of kingdom Plantae. Plants acquired chloroplasts by direct endosymbiosis of CYANOBACTERIA. They are characterized by a mainly photosynthetic mode of nutrition; essentially unlimited growth at localized regions of cell divisions (MERISTEMS); cellulose within cells providing rigidity; the absence of organs of locomotion; absence of nervous and sensory systems; and an alternation of haploid and diploid generations. It is a non-taxonomical term most often referring to LAND PLANTS. In broad sense it includes RHODOPHYTA and GLAUCOPHYTA along with VIRIDIPLANTAE. |
Plant |
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| D005557 |
Formaldehyde |
A highly reactive aldehyde gas formed by oxidation or incomplete combustion of hydrocarbons. In solution, it has a wide range of uses: in the manufacture of resins and textiles, as a disinfectant, and as a laboratory fixative or preservative. Formaldehyde solution (formalin) is considered a hazardous compound, and its vapor toxic. (From Reynolds, Martindale The Extra Pharmacopoeia, 30th ed, p717) |
Formalin,Formol,Methanal,Oxomethane |
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| D006801 |
Humans |
Members of the species Homo sapiens. |
Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man |
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| D000485 |
Allergens |
Antigen-type substances that produce immediate hypersensitivity (HYPERSENSITIVITY, IMMEDIATE). |
Allergen |
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