Transplantation of organs and tissues in cold-blooded animals

Many experiments have been conducted on small amphibious animals, amphibians. In 1894-had borne showed that part of the embryos of different species, such as the frog and toad, can grow together and form one body, capable of normal development. Born was crusial half of the embryo toad and a half Bud frogs. In the developed individual, consisting of two halves, belonged to different organisms.
Domestic and foreign scientists made a lot of experiments on transplantation of embryonic germ of the limbs of absolutley. From these beginnings, the transplanted from one animal to another, grew quite normal limbs, which then has grown nerves. If such transplants were made in the area of the front legs, grown "extra" leg moved with the forelegs. The same was observed during the transplantation at the rear limbs.
In 1927-1929 B. D. Morozov was transplanted the heart of one of the smooth muscle of the abdomen another. The transplanted heart was accustomed and continue to decline.
In 1927-1933, Copenhaver carried out transplantation of embryonic heart between different types of ambleston that in adulthood have different body sizes. After transplant this heart has grown in proportion to the size of the body of the new owner.
In 1941 interesting experiments published Soviet scientist N. P. Sinitsyn. Through skilful operation he had heart transplants in adults frogs. Frogs with someone else's heart lived for a long time. Three months after the operation there was a growing nerves in the transplanted heart, and it started to obey the nervous control of the new body.