11.   She might use a donor egg and a donor sperm, have an in vitro fertilization procedure and become a surrogate mother.

12.   The reason, according to these programs, is that while there is a limited supply of donor eggs, there is no shortage of donor sperm.

13.   The study warned, however, that there might be any number of women who contracted HIV through donor sperm but have yet to show any symptoms.

14.   While selling embryos for profit violates medical ethics rules, some clinics reportedly sell eggs left by patients and fertilized by donor sperm to desperate couples.

15.   Ten couples are in the queue for donor sperm, the Times said, quoting Dr. Noel Leong, head of the bank.

16.   Demand for donor sperm has diminished with new techniques devised for husbands with poor sperm counts or quality to father children.