11.   Mixed among his work e-mails is a week-by-week update on the development of a human fetus.

12.   Nobody believes that aborted human fetuses will be a routine source of tissue if the implants eventually succeed.

13.   Or, if you will, to kill a human fetus.

14.   Some of the other experiments include watching what high levels of potassium can do to blood pressure and seeing a human fetus develop.

15.   Strominger said he had got the idea that cytomegalovirus might be decoying the NK cells after finding a similar mechanism last year in cells of the human fetus.

16.   The factors are proteins generated by the budding nervous system when a human fetus is less than a month old and not yet the size of a pencil eraser.

17.   The genes that direct the unfolding of this architectural plan can be studied only in tissue from human fetuses, which is hard to obtain.

18.   The human fetus, before birth, is both innocent and germ-free.

19.   The worker called police, and two human fetuses were discovered inside.

20.   These two cells then continue to replicate and divide millions of times to form the human fetus and ultimately the born infant.