Tuft L, Friedman H
Ann Allergy. 1977 Dec;39(6):426-30.
In 18 ragweed hay fever patients who received injections of alum-precipitated pyridine (Allpyral) ragweed extracts in maintenance doses of between 6000 and 8000 P.N.U. at intervals of between two and four months over a two-year period, the prolonged interval did not seem to influence either the clinical response or the tendency to reaction, or result in significant change in immunological tolerance as determined by antibody studies, which included fluorescent antibody assays, as well as hemagglutination and RAST technics.
在18名豚草花粉热患者中，他们在两年期间接受了明矾沉淀的吡啶（Allpyral）豚草提取物注射，维持剂量为6000至8000个花粉单位（P.N.U.），注射间隔为两到四个月。较长的间隔时间似乎既不影响临床反应，也不影响反应倾向，通过包括荧光抗体测定、血凝和放射变应原吸附试验（RAST）技术在内的抗体研究确定，免疫耐受性也没有显著变化。
