When was the first embryo transfer performed?
Embryo transfer
Embryo transfer can be done at day two or day three, or later in the blastocyst stage, which was first performed in 1984.
Emerich Ullmann
Ullmann was a pioneer of renal transplantation research. In 1902, he performed the first successful renal autotransplantation in a dog. Reportedly, the kidney remained functional for five days. Soon afterwards, he was unsuccessful in trying the first renal xenotransplantation (cross-species transplant) between a goat and a dog. Following an unsuccessful attempt to transplant a pig's kidney into a human patient, who was in the final stage of renal disease, he stopped research of kidney transplantation.