Euro­pean Mar­row Donor Infor­ma­ti­on Sys­tem. A decen­tra­li­zed com­mu­ni­ca­ti­on sys­tem. Col­la­bo­ra­tors com­mu­ni­ca­te direct­ly with one ano­t­her via point-to-point con­nec­tions. It covers all the steps invol­ved in sear­ching for a donor, from the initi­al request to dis­tri­bu­ting regu­lar­ly updated donor lists, exch­an­ging orders and results, through the collec­tion of bone mar­row. Com­mu­ni­ca­ti­on is hand­led through stan­dar­di­zed messages exch­an­ged via an addi­tio­nal­ly secu­red e‑mail pro­to­col (“EMDIS Com­mu­ni­ca­ti­on Sys­tem”). Ori­gi­nal­ly deve­lo­ped for Euro­pe, this sys­tem has now been adop­ted by regis­tries in the USA and Australia.