Fredrik Lanner is in the Department of Clinical Sciences, Intervention and Technology, Karolinska Institutet, Division of Gynecology and Reproduction, Karolinska University Hospital, Stockholm, and ...

Only two weeks after fertilization, the first sign of the formation of the three axes of the human body (head/tail, ventral/dorsal, and right/left) begins to appear. At this stage, known as ...

Researchers have discovered that microRNAs play an important role in embryonic development. The study pinpoints two microRNA families that direct the allocation of cells into the three germ layers -- ...

Genomic scientists have revealed new insights into the process of human embryonic development using large-scale, whole-genome sequencing of cells and tissues from adult humans. The study analyzes ...

A gene that turns on very early in embryonic development could be key to the formation of the placenta, which provides the ...

During implantation, the human embryo is hidden inside a “black box.” Although peeking inside has been prohibited by the 14-day rule, which restricts in vitro studies to preimplantation events, a new ...

This article was originally on a blog post platform and may be missing photos, graphics or links. See About archive blog posts. The National Institutes of Health is proposing a small change to the ...

At the earliest stages of human embryonic development, a small collection of cells known as human embryonic stem cells (hESCs) orchestrates growth and differentiation, eventually giving rise to highly ...

Living structures that model early human embryonic development have been generated entirely from cells in the skin. The models mean it should be possible to study infertility, early miscarriage and ...

University of Cambridge scientists have used human stem cells to create three-dimensional embryo-like structures that replicate certain aspects of very early human development—including the production ...

A unique morphological feature of the embryonic avian cornea is the uniformity of its complement of striated collagen fibrils, each of which has a diameter of 25 nm. We have asked whether this ...