Transplants and Transfusions

Q: Is organ transplant or donation allowed? if yes, in what circumstances is it permissible/impermissible?

Q: I would to know the masla on donating organs in islaam! As well as donating blood?

Q: I want to know if organ donation is permissible in Islam. Is there any type of situation in which it will be premissible? The example given to me: someones brother is very ill-his kidneys have failed & doctors say he needs at least one kidney donated to him. Can this person donate one kidney to his brother?

Q: Is it permissible to donate blood?

Q: A person is in need of a kidney transplant. His cousin is willing to donate his kidney to him. Is it permissible in Islam for one to donate his organs to someone?