The common laboratory frog Xenopus laevis has puzzled researchers because it has twice the normal number of genes. A newly published genome sequence shows why: between 15 and 20 million years ago ...

Because of its large eggs, Xenopus laevis -- the African clawed frog -- has become a popular model for studying embryo development and cell biology. It's smaller cousin, X. tropicalis, is now ...

Making waves New study details how fertilization triggers changes to thousands of proteins in frog eggs Date: December 21, 2017 Source: Harvard Medical School ...

Xenopus embryo manipulation. Xenopus laevis were obtained by in vitro fertilization. Developmental stages were characterized according to standards from Nieuwkoop and Faber (Nieuwkoop and Faber ...

For more than half a century, studies on the African clawed frog (Xenopus laevis) have helped scientists better understand the biological underpinnings of life, from embryonic development and ...

In Xenopus, the bone morphogenetic protein (BMP) activity gradient is defined by a 'shuttling-based' mechanism, whereby the BMP ligands are translocated ventrally through their association with ...

The African clawed frog, Xenopus laevis, is a palm-sized, greenish-gray animal that hails from the ponds and rivers of sub-Saharan Africa, where it lived for millions of years without anyone ...

Enhanced water recipe and enrichment for oocyte quality and embryo development in the African clawed frog (Xenopus laevis). Laboratory Animal Science Professional 7(1) (March), 43-45. This article ...

Nicotine induced defects in the frog embryo brain (center) can be rescued by transplanting an HCN2 expressing patch on the embryo far from the brain. Treated embryos are observed to have normal ...

X-ray phase-contrast tomography: This shows an early frog embryo in cellular resolution (left) and cell and tissue motion captured and visualized using flow analysis (right). (Image: Alexey Ershov/KIT ...

They are named for the African clawed frog Xenopus laevis, which supplies all their cells, and the suggestion, encapsulated in the prefix, that something strange, alien, is at work.

Swarms of tiny living robots can self-replicate in a dish by pushing loose cells together. The xenobots – made from frog cells – are the first multicellular organisms found to reproduce in ...