title: The rosette inhibition test in early pregnancy diagnosis.
abstract: The rosette inhibition test (RIT) was used to detect pregnancy around the time of implantation. Using an antiserum to peripheral blood lymphocytes, it was possible to diagnose 80 per cent of pregnancies. These results substantiate the view that there is an early pregnancy factor (EPF) present in the serum at a very early stage of gestation.
mesh_terms: D000818:Animals; D000961:Antilymphocyte Serum / Q000032:analysis; D003165:Complement System Proteins / Q000032:analysis; D005260:Female; D006168:Guinea Pigs; D006801:Humans; D011247:Pregnancy; D011259:Pregnancy Tests, Immunologic; D012397:Rosette Formation
chemical_list: D000961:Antilymphocyte Serum; D003165:Complement System Proteins