1.   The embryo is thus a chimaera, a mosaic of two different kinds of cells.

2.   The following Tuesday morning the embryos are recovered from the temporary recipients.

3.   When first formed, the embryo is only half a millimetre long.

4.   An eight-week-old embryo is only an inch long.

5.   An embryo is all potential, all Edenic.

6.   And in the straws are human embryos, each smaller than the period at the end of this sentence.

7.   And in that case the embryos were runts whose growth was dramatically stunted.

8.   Anne DeLong, spokeswoman for the Catholic-based Human Life International, said the embryos are live humans and it would be wrong to destroy them.

9.   As more and more embryos are stored, doctors are increasingly coming across patients with heart-wrenching situations.

10.   At that time, the embryo was smaller than a pinpoint and had not been attached to a uterine wall.