* * * HOPKINS NEEDS YOU * * * Genetics of asthma study: Families are needed to participate in a study to reveal the gene(s) that cause asthma and/or allergy. The study consists of one visit by a father, a mother and at least two children. At least two children should be older than 6, with asthma; and there must be one par-ent without asthma. Families will be compensated for their participation and will receive free pulmonary function and skin tests. Call Maria Thompson at 550-2124. Imaging study: Healthy men and women 18 to 28 are needed for a research study requiring the injection of a radioisotope and an investigational drug. Volunteers will be compensated. Call Carol at 955-8501. Norplant user study: Women 18 to 40 who are sexually active and experiencing irregular periods or prolonged bleeding are needed for a study designed to evaluate medications used to treat irregular bleeding in Norplant users. Participants will be paid up to $180 upon completion of the study. For information, call the Office of Family Planning at 550-3060. Outpatient asthma study: Men and women 18 to 50 are wanted for an outpatient study involving three visits (each lasting 15 minutes to 1 hour) per week for four weeks at the Bayview Campus Johns Hopkins Asthma and Allergy Center. For information, call 550-2120. Birth control pill study: Healthy women 18 to 45 are needed for a three-year study of a new low-dose birth control pill. Call Bev Smith at 955-2007. Cat-owner allergy study: Allergic cat owners who use medicine regularly for symptoms are needed for an air filter study. Participants will receive free allergy testing and will be compensated for their time. Call Beth Flanagan at 614-1982.