21.   Pregnant women are good poison detectors because their tastes are designed to protect the developing fetus.

22.   Salt also has been associated with fertility and fecundity, and indeed a pregnant woman needs more salt for her developing fetus.

23.   Some experts caution that microwave emissions can be dangerous to developing fetuses and that pregnant women should stand clear of microwaves in use.

24.   That is not the same as cloning the more sophisticated cells of an adult animal, or even a developing fetus.

25.   The developing fetus is very vulnerable to insult at critical times in pregnancy.

26.   They are obtained from days-old human embryos, and are the cells that mature and differentiate into all the tissues of the developing fetus.

27.   A developing fetus can be harmed if the mother takes drugs or too much alcohol or fails to eat properly.

28.   Caspases help eliminate unneeded cells in the developing fetus.

29.   That might disrupt blood flow to the placenta or developing fetus, Green said.