| surface-active agent | Agents that modify interfacial tension of water; usually substances that have one lipophilic and one hydrophilic group in the molecule; includes soaps, detergents, emulsifiers, dispersing and wetting agents, and several groups of antiseptics. (12 Dec 1998) |
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| surface active compound | <biochemistry> Usually, in biological systems, means a detergent like molecule that is amphipathic and that will bind to the plasma membrane or to a surface with which cells come in contact, altering its properties from hydrophobic to hydrophilic or vice versa. (18 Nov 1997) |
| immunity, active | Resistance to a disease agent resulting from the production of specific antibodies by the host, either after exposure to the disease or after vaccination. (12 Dec 1998) |
| immunotherapy, active | Active immunization where vaccine is administered for therapeutic or preventive purposes. This can include administration of immunopotentiating agents such as bcg vaccine and corynebacterium parvum as well as biological response modifiers such as interferons, interleukins, and colony-stimulating factors in order to directly stimulate the immune system. (12 Dec 1998) |
| optically active | <chemistry> A material which can rotate plane-polarized light. (09 Jan 1998) |
| tensio active | Having an effect on surface tension. (18 Nov 1997) |
| actinic dermatitis | Dermatitis caused or elicited by exposure to sunlight; may be phototoxic or photoallergic, and can result from topical application, ingestion, inhalation, or injection of mediating phototoxic or photoallergic material. See: photosensitization. Synonym: actinic dermatitis, actinodermatitis. Origin: photo-+ G. Derma, skin, + -itis, inflammation (05 Mar 2000) |
| allergic contact dermatitis | A delayed type IV allergic reaction of the skin with varying degrees of erythema, oedema, and vesiculation resulting from cutaneous contact with a specific allergen. Synonym: contact allergy. (05 Mar 2000) |
| ancylostoma dermatitis | Cutaneous larva migrans caused by larvae of hookworms. Synonym: ancylostoma dermatitis, ancylostomiasis cutis, coolie itch, dew itch, ground itch, swamp itch, swimmer's itch, toe itch, water itch, water sore. (05 Mar 2000) |
| atopic dermatitis | <dermatology> A type of immune-mediated (allergic) inflammatory skin disorder that results in a itchy rash. See: atopic eczema. (27 Sep 1997) |
| berloque dermatitis | Berlock dermatitis, a type of photosensitization resulting in deep brown pigmentation on exposure to sunlight after application of bergamot oil and other essential oils in perfume. (05 Mar 2000) |
| blastomycetic dermatitis | A cutaneous form of blastomycosis. (05 Mar 2000) |
| bubble gum dermatitis | Allergic contact dermatitis developing about the lips in children who chew bubble gum; caused by plastics in the gum substance. (05 Mar 2000) |
| papular dermatitis of pregnancy | Intensely pruritic papular eruption of torso and extremities occurring throughout pregnancy, with no systemic toxicity; may be similar to pruritic urticarial papules and plaques of pregnancy. (05 Mar 2000) |
| mango dermatitis | A perioral dermatitis resulting from a sensitization reaction to the resinous coating on the peel of the mango fruit. (05 Mar 2000) |