In March, President Obama ended restrictions on the use of federal money for research using human embryonic stem cells.

VOA: special.2009.04.07

The book is a history of science, professional morals and the human story behind a famous line of cells.

VOA: special.2010.07.21

Last year,President Obama ended restrictions on the use of federal money for studies of human embryonic stem cells.

VOA: special.2010.11.02

Mister Cooper says the substances build up in the cells of plants, animals and human beings.

VOA: special.2009.06.23

Human genes are normally organized along forty-six chromosomes in our cells, twenty-three from each parent.

VOA: special.2009.09.09

The parasites reproduce in the human liver, and then infect the red blood cells.

VOA: special.2010.04.20