Safer drugs for children.

cancer patients, showing a high degree of selectivity and sensitivity, and it was the subject of a recent international workshop (Cancer Re-seai-ch, 39, 551-662, 1-979). The consensus of that meeting was that LAI testing offered a promising adjunct to currently available diagnostic and monitoring procedures in cancer patients, having the essential attributes of specificity and correlation with clinical course. (Ilearly there is a need for f-Lirther study to evaltiate the usefulness of this assay. In this paper we report the results of a series of tests carried out using the technique of Grosser & Thomson (1,975) on blood samples taken from 44 women at first presentation to the cliiiic with s-Lispected breast disease. An essential feature of this trial was that the diagnosis of the disease was unknown at the time of testing, being confirmed 1-3 weeks later by clinical examination, mammography and histology. A realistic assessment of the immunodiagnostic value of LAI should therefore be possible by comparison with standard screening procedures. The sample