Chimaeras are both monsters of the ancient imagination and a long-established research
tool. Recent advances, particularly those dealing with the identification and generation of …

Recent demonstrations of human brain organoid transplantation in rodents have
accentuated ethical concerns associated with these entities, especially as they relate to …

In 1872, a woman known only as" An Earnest Englishwoman" published a letter titled" Are
Women Animals?" in which she protested against the fact that women were not treated as …

In 2008, researchers created human three-dimensional neural tissue–known as the
pioneering work of “brain organoids.” In recent years, some researchers have transplanted …

Human brain research is moving into a dilemma. The best way to understand how the
human brain works is to study living human brains in living human beings, but ethical and …

We are causing species to go extinct at extraordinary rates, altering existing species in
unprecedented ways, and creating entirely new species. More than ever before, we require …

Experiments involving the transplantation of human stem cells and their derivatives into
early fetal or embryonic nonhuman animals raise novel ethical issues due to their possible …

Organoids are 3D biological structures constructed from stem cells in vitro. They partially
mimic the function of real organs. Although the number of articles detailing this technology …

Background The burgeoning field of biomedical research involving the mixture of human
and animal materials has attracted significant ethical controversy. Due to the many …

Dr. Irving Weissman, a professor in the departments of pathology and developmental
biology at Stanford University (Stanford, CA), approached one of the authors of this article in …