Analysis of bearded dragon model reveals a novel tooth replacement strategy that demonstrates the critical importance of epithelial patterning, cell migration, and putative stem cell functional specialization in tissue regeneration.

The nuclear export receptor Crm1 cooperatively binds its HIV Rev-RRE cargo as a dimer using a species-specific interface that supports viral replication by enhancing nuclear export of HIV RNA.

Nematode hermaphroditism has co-evolved with a self-sperm sensing mechanism that protects hermaphrodites from the detrimental effects of mating with males.

Despite risks of infection and reduced fitness, tooth fracture frequency in gray wolves increases rapidly when prey are scarce because they must consume carcasses more completely.

The tooth replacement pattern of early-diverging ceratopsians helps to understand the origin of the specialized dental system of ceratopsids and provides new insights to feeding strategy transition.

Hermaphroditic Caenorhabditis elegans slow the onset of mating-induced death through self-sperm-regulated insulin-like gene expression, which regulates the activity of the IIS/FOXO pathway, mTOR signaling, and the TFEB/HLH-30 transcription factor.

The accumulation of ferroptotic stress during tooth development has a critical effect on its morphogenesis.

A new optical approach reveals dynamics of ground reaction forces in Drosophila larvae and opens new avenues for studying the biomechanics of movement in small animals.

Genome editing in the choanoflagellate Salpingoeca rosetta opens newfound possibilities to functionally probe choanoflagellate genes that may illuminate the origin of their closest relatives, the animals.

Teeth are maintained in two amphibian groups (caecilians and salamanders) but were lost in frogs over 20 times independently, a higher incidence of edentulism than any other major vertebrate group.