Our bodies are made up of countless cells, and each one is enclosed by a thin layer called the cell membrane. This membrane ...

Every cell in a body contains the same genetic sequence, yet each cell expresses only a subset of those genes. These cell-specific gene expression patterns, which ensure that a brain cell is different ...

Descriptions of the embryo go back at least to the time of Aristotle, but it has only been since the late 19 th century and early 20 th century that advances in experimental approaches allowed ...

Receptor proteins, expressed on the cell surface or within the cell, bind to different signaling molecules, known as ligands, ...

Taste receptors are specialized proteins that facilitate the sense of taste. There are different groups of receptors for ...

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

Caltech researchers have developed a powerful new method for creating embryo-like structures from stem cells that could ...

Prior to using this narrative, have learners create their own model of a cell in their notebooks using whatever background information or experience they might have. While exploring the narrative, ...

The earliest days after fertilization, once a sperm cell meets an egg, are shrouded in scientific mystery. The process of how a humble single cell becomes an organism fascinates scientists across ...

A powerful new method for creating embryo-like structures from stem cells that could transform how we study fertility.