Tsukuba, Japan—Efforts to observe chicken embryonic development date back to Aristotle date back to 300 BC. However, because the chicken's eggshell is opaque, it has been necessary to break the shell ...

The aim of this study is to investigate the effect of etofenamate, a nonsteroidal anti-inflammatory drug, on the development of midline closure defects in early chick embryos. The study was conducted ...