CULTURES, CLONES, STEM CELLS Cultures
Corneas can be stored for 30 days or so and skin can be grown in a culture medium. This is a sterile substance that will support living cells with little or no interreaction with these cells. Natural examples are Agar and Gelatine. However media are now prepared scientifically with nourishing additives to suit different living cells. Organ culture media are used for skin and bone.

Clones
Transgenic pigs have been produced by scientifically altering the pigs' DNA and then by selective reproduction. It takes several reproduction generations to achieve an 'occasional' transgenic pig, which is not practical for quantity production. However by using the DNA from a transgenic pig then many identical pigs can be reproduced, i.e. cloned.

Stem Cells
These are basic cells that can then develop into specialist cells performing various functions that are required to make, for example, a human being. The body's genes control how a stem cell will develop. The various tissues and organs required for transplantation can be grown by selecting and implanting the genes that instruct stem cells to develop and grow. This will happen only under the correct scientific and environmental conditions. Already various tissues and even kidneys have been produced in laboratories. Some of these tissues have been transplanted successfully to human beings eg ears, bone and heart muscle; organs will follow! Because the stem cells and genes can be obtained from the person requiring treatment there will be no need for anti-rejection drugs.