By tracking the fate of individual embryonic stem cells, researchers have found that endoderm cells—early embryonic cells ...

Tsukuba, Japan—Animal organs are enclosed by a specialized epithelial layer. Epithelial cells typically exhibit apicobasal polarity: their apical surfaces contact other cells or the environment, ...

Mice bred in a germ-free environment were compared to those bred in an environment colonized with germs, and the latter were ...

Scientists of the study also pointed out that arguably more simple procedures such as freeze-drying sperm itself (rather than the cells that assist in healthy sperm production), may carry health risks ...