His idea was to insert tissues from human fetal organs into mice with deficient immune systems that would not reject the implants.

Ultrasound machines were capable, by bouncing sound waves off the fetus, of showing the outlines of fetal organs and limbs.

Detailed study of placentation, fetal organs and physiology can now be more easily related to human development.

President Reagan on Friday signed into a law a measure banning the sale of fetal organs and tissues.

Another type of ultrasound, Doppler, is being used to monitor blood flow of fetal organs, helping doctors check not just structure, but function of organs.

The fetal organs constituted an entire fetal immune system.

He said the group received "fetal organs and parts" from hospitals and supplied them to researchers around the country.

Immunofluorescence (IF) can be used to detect the virus in fetal organs.

The condition, which invariably results in still birth, is caused by abnormal splitting of primitive fetal organs.

Experiments over the last decade indicate that transplanting of fetal organs or cells could help patients with intractable diseases like Parkinson's or Alzheimer's.