At the Jones Institute in Virginia, where scientists are clearly interested in the work, no one has offered to donate embryos, Dr. Mayer said.

Dr. William E. Gibbons, who oversaw the work at the Jones Institute, said the procedure offered several advantages over using frozen embryos.

The experiment by the Jones Institute, which is affiliated with the Eastern Virginia Medical School, would fall outside such an exception, because no federal money was involved.

At the Jones Institute, 2,000 embryos lie in storage in three tanks of liquid nitrogen.

But the Jones Institute, as far as experts know, is the only fertility clinic in the nation whose scientists have themselves tried to derive stem cells.

Years later, he performed the screening at the Jones Institute.

With the success of the in-vitro fertilization program, the Jones Institute for Reproductive Medicine was founded in 1983.

I went to the Jones Institute in Virginia and tried in vitro.

Strain Counterstrain technique is being taught in Australia officially from the Jones Institute (funder of the technique) only from 2011.

The Jones Institute, a private fertility clinic in Norfolk, Va., whose embryo experiments have drawn widespread condemnation, declines to name them.