| 摘要 |
<p>A mixture for application to the skin for determining whether an individual has a Type I, II, III or IV Gell-Coombs immune response to a particular ingestible substance comprising a solution of water and a suitable aprotic solvent having the ability to penetrate the skin, such as dimethyl sulphoxide, the quantities being sufficient to produce a reaction on the skin of a sensitized individual on application of a small amount. A device (10) for applying the mixture (26) comprises such a mixture in combination with means for holding a suitable amount such as 0.05 millilitres of the mixture against the skin conveniently in the form of a test strip (14) having a plurality of cells (12) containing absorbent material (18) impregnated with the mixture, the cells open on one side to contact the skin and an adhesive strip (20) for securing the cells against the skin, together with provisions (24, 28) to prevent the solvent from dissolving the adhesive means and carrying adhesive through the skin. </p> |
