Scientists published more than three dozen papers as part of the Human Cell Atlas, an effort to map the human body cell by cell.

It is to do for histology what was done for genetics by making an exhaustive map of a set of components of the human body—in this case, its cells, rather than its DNA.

The average body contains about 37 trillion cells – and we are in the midst of a revolutionary quest to understand what they all do. Unravelling this requires the expertise of scientists from ...

Cells are the building blocks that form all the tissues and organs of the body — and now, scientists have an estimate of just how many individual cells the human body contains.

By then, the human embryo starts taking on some of its key features. A structure called the primitive streak, for example, organizes the head-to-foot arrangement that the body will take.