During the first 72 hours in particular, extracellular vesicles—nanoparticles enclosed in cell membranes—play a significant role in the embryonic development of zebrafish. This is the result of a ...

Tiny, striped zebrafish are helping scientists trace how a gene linked to albinism influences eye development, work that may ...

Embedded within the mammalian life cycle is a highly organised progression from fertilisation through preimplantation stages, blastocyst formation, implantation and subsequent axis establishment and ...

Space Shuttle Columbia's 1994 mission studied animal reproduction in zero gravity. Four red-bellied newts and medaka fish were part of biology experiments. At least 32 newt eggs and 25 medaka fry ...

The earliest days after fertilization, once a sperm cell meets an egg, are shrouded in scientific mystery. The process of how a humble single cell becomes an organism fascinates scientists across ...

Descriptions of the embryo go back at least to the time of Aristotle, but it has only been since the late 19 th century and early 20 th century that advances in experimental approaches allowed ...