Human embryos briefly exhibit traits like tails and gill-like structures, revealing our evolutionary history and deep ...

Many four-legged animals go through embryonic stages that have similar features -- gill arches, a notochord, segmentation, and paddle-like limb buds -- as they develop into different adults.

New camera techniques transform biological imaging In a nutshell Optimizing camera settings can provide better images ...

While stem cell-based embryo models greatly extend the ability to study this ... [the gastruloid model], trying to see what it can teach us about the very early stages of development, and also ...

From a single cell to an entire organism, embryonic development is a process of continuous and constant change. However, our ...

A second issue concerned the derivation of PSCs. Assuming that at least during the earliest phases of research, human embryos produced via in vitro fertilization (IVF) would be the best source for ...

In the mouse developing embryo, she previously demonstrated a bias at the two-cell stage: one cell contributed more to fetal tissue and the other to the placenta. 4 “We know so little about the very ...

In Tjitske Zaat and colleagues’ study,1 fewer than 3% of patients in natural menstrual cycles were administered exogenous progesterone for luteal phase support. In their Comment,2 Shari Mackens and ...