ABSTRACT

ItisraretoencounterdepressedantigensotherthanABHassociatedwithleukemiabutsome havebeendescribed.DepressedRhantigensandRhmosaicismhavebeenreportedassociated withleukemia(436-439),myeloidmetaplasia(440),myelofibrosis(441,442),andpolycythemia (443,444).ItisinterestingtonotethatonlydepressionsofD,C,andEhavebeendescribed; sofar,candeantigensappeartobeunaffectedinthisgroupofdiseases,allofwhichmay representanabnormalcloneofstemcells.