Regulatory sequences downstream of a key limb identity gene are required for normal sizes of leg bones, and are changed in wild species with dramatic alterations in pelvic structures.

Quantitative analyses of multi-dimensional microscopy datasets with a new Fiji/ImageJ plugin for cell tracking reveal the lineage restrictions and morphogenetic cellular behaviors underlying embryonic limb outgrowth in the direct developing crustacean Parhyale hawaiensis.

A Drosophila myostatin-like factor provides an extrinsic signal produced by muscles that regulates Drosophila appendage development.

The same genes and signaling pathways control the formation of limbs in vertebrates, arthropods and cuttlefish.

The same genes and signalling pathways control the formation of skin appendages in both fish and land animals.

Inflammatory cells differentially regulate a scarring versus a regenerating response to injury in mammals.

The first malacostracan genome sequence will establish the genetically tractable Parhyale hawaiensis as a model organism in this key animal group.

A genetic screen and live cell imaging show that a newly identified coiled-coil protein called SAS-7 is the earliest acting factor in centriole assembly yet identified in the roundworm Caenorhabditis elegans.