Transplant "rejection" was not understood until after 1950.
why were transplants between 1800 and 1950 not successful?
what is the develoment betwen transplant in1800and1950
Transplants between 1800 and 1950 were not very successful, this is because there was not things like tissue typing and immunosuppressive drugs available, these are important because tissue typing test that the tissue is compatible with the body it will be transplanted to, and immunosuppressive drugs destroy the immune system so that the antiboddies wont destroy the new organ.
well if you meen unsuccessful by living only a week or so then yes
Joseph Murray performed the first successful transplant, a kidney transplant between identical twins, in 1954, successful because no immunosuppression was necessary in genetically identical twins.
nipples
Transplant rejection was not understood until the 1950s.
1954 was when "organ rejection" was finally understood (one identical twin got a transplanted kidney from his other twin and lived happily ever after, sans organ rejection). Before then transplants were not successful due to lack of immunosuppresive drugs. The first good immunosuppressant (Ciclosporin)was developed in the 1970's, but rates did improve slightly after 1954 just through enhanced medical understanding.
Liver and kidney
They happened, but no immunosuppressants were available. So the transplants generally failed. Here's a timeline: http://www.wellcomecollection.org/whats-on/events/in-or-out/transplant-timeline.aspx
Liver and kidneys.
because people on that time, they were not aware of transplant that much and then when in 1954 for the first kidney was transplant from one twins brother to another and they got the idea which if the body did not reject the organ. (E.g. perfect kidney for the perfect body, not old, not damaged) the transplant will successfully work for long time. So that why before 1954 the transplant were unsuccessful.further more, the other reason is, that there were no Immunosuppression ( kind of drugs, radiation which help the body to not reject the organ). So thats why transplants were unsuccessful.